209995380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:879

約数の個数: 216

約数和(自身を含む): 767468520

約数和(自身を除く): 557473140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 49, 58, 60, 63, 70, 84, 87, 90, 98, 105, 116, 126, 140, 145, 147, 174, 180, 196, 203, 210, 245, 252, 261, 290, 294, 315, 348, 406, 420, 435, 441, 490, 522, 580, 588, 609, 630, 735, 812, 821, 870, 882, 980, 1015, 1044, 1218, 1260, 1305, 1421, 1470, 1642, 1740, 1764, 1827, 2030, 2205, 2436, 2463, 2610, 2842, 2940, 3045, 3284, 3654, 4060, 4105, 4263, 4410, 4926, 5220, 5684, 5747, 6090, 7105, 7308, 7389, 8210, 8526, 8820, 9135, 9852, 11494, 12180, 12315, 12789, 14210, 14778, 16420, 17052, 17241, 18270, 21315, 22988, 23809, 24630, 25578, 28420, 28735, 29556, 34482, 36540, 36945, 40229, 42630, 47618, 49260, 51156, 51723, 57470, 63945, 68964, 71427, 73890, 80458, 85260, 86205, 95236, 103446, 114940, 119045, 120687, 127890, 142854, 147780, 160916, 166663, 172410, 201145, 206892, 214281, 238090, 241374, 255780, 258615, 285708, 333326, 344820, 357135, 362061, 402290, 428562, 476180, 482748, 499989, 517230, 603435, 666652, 714270, 724122, 804580, 833315, 857124, 999978, 1034460, 1071405, 1166641, 1206870, 1428540, 1448244, 1499967, 1666630, 1810305, 1999956, 2142810, 2333282, 2413740, 2499945, 2999934, 3333260, 3499923, 3620610, 4285620, 4666564, 4999890, 5833205, 5999868, 6999846, 7241220, 7499835, 9999780, 10499769, 11666410, 13999692, 14999670, 17499615, 20999538, 23332820, 29999340, 34999230, 41999076, 52498845, 69998460, 104997690, 209995380]

約数ペア:

[(1, 209995380), (2, 104997690), (3, 69998460), (4, 52498845), (5, 41999076), (6, 34999230), (7, 29999340), (9, 23332820), (10, 20999538), (12, 17499615), (14, 14999670), (15, 13999692), (18, 11666410), (20, 10499769), (21, 9999780), (28, 7499835), (29, 7241220), (30, 6999846), (35, 5999868), (36, 5833205), (42, 4999890), (45, 4666564), (49, 4285620), (58, 3620610), (60, 3499923), (63, 3333260), (70, 2999934), (84, 2499945), (87, 2413740), (90, 2333282), (98, 2142810), (105, 1999956), (116, 1810305), (126, 1666630), (140, 1499967), (145, 1448244), (147, 1428540), (174, 1206870), (180, 1166641), (196, 1071405), (203, 1034460), (210, 999978), (245, 857124), (252, 833315), (261, 804580), (290, 724122), (294, 714270), (315, 666652), (348, 603435), (406, 517230), (420, 499989), (435, 482748), (441, 476180), (490, 428562), (522, 402290), (580, 362061), (588, 357135), (609, 344820), (630, 333326), (735, 285708), (812, 258615), (821, 255780), (870, 241374), (882, 238090), (980, 214281), (1015, 206892), (1044, 201145), (1218, 172410), (1260, 166663), (1305, 160916), (1421, 147780), (1470, 142854), (1642, 127890), (1740, 120687), (1764, 119045), (1827, 114940), (2030, 103446), (2205, 95236), (2436, 86205), (2463, 85260), (2610, 80458), (2842, 73890), (2940, 71427), (3045, 68964), (3284, 63945), (3654, 57470), (4060, 51723), (4105, 51156), (4263, 49260), (4410, 47618), (4926, 42630), (5220, 40229), (5684, 36945), (5747, 36540), (6090, 34482), (7105, 29556), (7308, 28735), (7389, 28420), (8210, 25578), (8526, 24630), (8820, 23809), (9135, 22988), (9852, 21315), (11494, 18270), (12180, 17241), (12315, 17052), (12789, 16420), (14210, 14778)]