420237720

素因数分解:

$2^3\times 3^4\times 5^1\times 7^2\times {\mathrm{2647}}^1$

素因数の和:2684

約数の個数: 240

約数和(自身を含む): 1643693040

約数和(自身を除く): 1223455320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 81, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 162, 168, 180, 189, 196, 210, 216, 245, 252, 270, 280, 294, 315, 324, 360, 378, 392, 405, 420, 441, 490, 504, 540, 567, 588, 630, 648, 735, 756, 810, 840, 882, 945, 980, 1080, 1134, 1176, 1260, 1323, 1470, 1512, 1620, 1764, 1890, 1960, 2205, 2268, 2520, 2646, 2647, 2835, 2940, 3240, 3528, 3780, 3969, 4410, 4536, 5292, 5294, 5670, 5880, 6615, 7560, 7938, 7941, 8820, 10584, 10588, 11340, 13230, 13235, 15876, 15882, 17640, 18529, 19845, 21176, 22680, 23823, 26460, 26470, 31752, 31764, 37058, 39690, 39705, 47646, 52920, 52940, 55587, 63528, 71469, 74116, 79380, 79410, 92645, 95292, 105880, 111174, 119115, 129703, 142938, 148232, 158760, 158820, 166761, 185290, 190584, 214407, 222348, 238230, 259406, 277935, 285876, 317640, 333522, 357345, 370580, 389109, 428814, 444696, 476460, 500283, 518812, 555870, 571752, 648515, 667044, 714690, 741160, 778218, 833805, 857628, 952920, 1000566, 1037624, 1072035, 1111740, 1167327, 1297030, 1334088, 1429380, 1500849, 1556436, 1667610, 1715256, 1945545, 2001132, 2144070, 2223480, 2334654, 2501415, 2594060, 2858760, 3001698, 3112872, 3335220, 3501981, 3891090, 4002264, 4288140, 4669308, 5002830, 5188120, 5836635, 6003396, 6670440, 7003962, 7504245, 7782180, 8576280, 9338616, 10005660, 10505943, 11673270, 12006792, 14007924, 15008490, 15564360, 17509905, 20011320, 21011886, 23346540, 28015848, 30016980, 35019810, 42023772, 46693080, 52529715, 60033960, 70039620, 84047544, 105059430, 140079240, 210118860, 420237720]

約数ペア:

[(1, 420237720), (2, 210118860), (3, 140079240), (4, 105059430), (5, 84047544), (6, 70039620), (7, 60033960), (8, 52529715), (9, 46693080), (10, 42023772), (12, 35019810), (14, 30016980), (15, 28015848), (18, 23346540), (20, 21011886), (21, 20011320), (24, 17509905), (27, 15564360), (28, 15008490), (30, 14007924), (35, 12006792), (36, 11673270), (40, 10505943), (42, 10005660), (45, 9338616), (49, 8576280), (54, 7782180), (56, 7504245), (60, 7003962), (63, 6670440), (70, 6003396), (72, 5836635), (81, 5188120), (84, 5002830), (90, 4669308), (98, 4288140), (105, 4002264), (108, 3891090), (120, 3501981), (126, 3335220), (135, 3112872), (140, 3001698), (147, 2858760), (162, 2594060), (168, 2501415), (180, 2334654), (189, 2223480), (196, 2144070), (210, 2001132), (216, 1945545), (245, 1715256), (252, 1667610), (270, 1556436), (280, 1500849), (294, 1429380), (315, 1334088), (324, 1297030), (360, 1167327), (378, 1111740), (392, 1072035), (405, 1037624), (420, 1000566), (441, 952920), (490, 857628), (504, 833805), (540, 778218), (567, 741160), (588, 714690), (630, 667044), (648, 648515), (735, 571752), (756, 555870), (810, 518812), (840, 500283), (882, 476460), (945, 444696), (980, 428814), (1080, 389109), (1134, 370580), (1176, 357345), (1260, 333522), (1323, 317640), (1470, 285876), (1512, 277935), (1620, 259406), (1764, 238230), (1890, 222348), (1960, 214407), (2205, 190584), (2268, 185290), (2520, 166761), (2646, 158820), (2647, 158760), (2835, 148232), (2940, 142938), (3240, 129703), (3528, 119115), (3780, 111174), (3969, 105880), (4410, 95292), (4536, 92645), (5292, 79410), (5294, 79380), (5670, 74116), (5880, 71469), (6615, 63528), (7560, 55587), (7938, 52940), (7941, 52920), (8820, 47646), (10584, 39705), (10588, 39690), (11340, 37058), (13230, 31764), (13235, 31752), (15876, 26470), (15882, 26460), (17640, 23823), (18529, 22680), (19845, 21176)]