28021140

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{353}}^1$

素因数の和:388

約数の個数: 180

約数和(自身を含む): 102544596

約数和(自身を除く): 74523456

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 252, 270, 294, 315, 324, 353, 378, 405, 420, 441, 490, 540, 567, 588, 630, 706, 735, 756, 810, 882, 945, 980, 1059, 1134, 1260, 1323, 1412, 1470, 1620, 1764, 1765, 1890, 2118, 2205, 2268, 2471, 2646, 2835, 2940, 3177, 3530, 3780, 3969, 4236, 4410, 4942, 5292, 5295, 5670, 6354, 6615, 7060, 7413, 7938, 8820, 9531, 9884, 10590, 11340, 12355, 12708, 13230, 14826, 15876, 15885, 17297, 19062, 19845, 21180, 22239, 24710, 26460, 28593, 29652, 31770, 34594, 37065, 38124, 39690, 44478, 47655, 49420, 51891, 57186, 63540, 66717, 69188, 74130, 79380, 86485, 88956, 95310, 103782, 111195, 114372, 133434, 142965, 148260, 155673, 172970, 190620, 200151, 207564, 222390, 259455, 266868, 285930, 311346, 333585, 345940, 400302, 444780, 467019, 518910, 571860, 622692, 667170, 778365, 800604, 934038, 1000755, 1037820, 1334340, 1401057, 1556730, 1868076, 2001510, 2335095, 2802114, 3113460, 4003020, 4670190, 5604228, 7005285, 9340380, 14010570, 28021140]

約数ペア:

[(1, 28021140), (2, 14010570), (3, 9340380), (4, 7005285), (5, 5604228), (6, 4670190), (7, 4003020), (9, 3113460), (10, 2802114), (12, 2335095), (14, 2001510), (15, 1868076), (18, 1556730), (20, 1401057), (21, 1334340), (27, 1037820), (28, 1000755), (30, 934038), (35, 800604), (36, 778365), (42, 667170), (45, 622692), (49, 571860), (54, 518910), (60, 467019), (63, 444780), (70, 400302), (81, 345940), (84, 333585), (90, 311346), (98, 285930), (105, 266868), (108, 259455), (126, 222390), (135, 207564), (140, 200151), (147, 190620), (162, 172970), (180, 155673), (189, 148260), (196, 142965), (210, 133434), (245, 114372), (252, 111195), (270, 103782), (294, 95310), (315, 88956), (324, 86485), (353, 79380), (378, 74130), (405, 69188), (420, 66717), (441, 63540), (490, 57186), (540, 51891), (567, 49420), (588, 47655), (630, 44478), (706, 39690), (735, 38124), (756, 37065), (810, 34594), (882, 31770), (945, 29652), (980, 28593), (1059, 26460), (1134, 24710), (1260, 22239), (1323, 21180), (1412, 19845), (1470, 19062), (1620, 17297), (1764, 15885), (1765, 15876), (1890, 14826), (2118, 13230), (2205, 12708), (2268, 12355), (2471, 11340), (2646, 10590), (2835, 9884), (2940, 9531), (3177, 8820), (3530, 7938), (3780, 7413), (3969, 7060), (4236, 6615), (4410, 6354), (4942, 5670), (5292, 5295)]