281656700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:328

約数の個数: 144

約数和(自身を含む): 705788160

約数和(自身を除く): 424131460

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 31, 50, 52, 58, 62, 65, 100, 116, 124, 130, 145, 155, 241, 260, 290, 310, 325, 377, 403, 482, 580, 620, 650, 725, 754, 775, 806, 899, 964, 1205, 1300, 1450, 1508, 1550, 1612, 1798, 1885, 2015, 2410, 2900, 3100, 3133, 3596, 3770, 4030, 4495, 4820, 6025, 6266, 6989, 7471, 7540, 8060, 8990, 9425, 10075, 11687, 12050, 12532, 13978, 14942, 15665, 17980, 18850, 20150, 22475, 23374, 24100, 27956, 29884, 31330, 34945, 37355, 37700, 40300, 44950, 46748, 58435, 62660, 69890, 74710, 78325, 89900, 90857, 97123, 116870, 139780, 149420, 156650, 174725, 181714, 186775, 194246, 216659, 233740, 292175, 313300, 349450, 363428, 373550, 388492, 433318, 454285, 485615, 584350, 698900, 747100, 866636, 908570, 971230, 1083295, 1168700, 1817140, 1942460, 2166590, 2271425, 2428075, 2816567, 4333180, 4542850, 4856150, 5416475, 5633134, 9085700, 9712300, 10832950, 11266268, 14082835, 21665900, 28165670, 56331340, 70414175, 140828350, 281656700]

約数ペア:

[(1, 281656700), (2, 140828350), (4, 70414175), (5, 56331340), (10, 28165670), (13, 21665900), (20, 14082835), (25, 11266268), (26, 10832950), (29, 9712300), (31, 9085700), (50, 5633134), (52, 5416475), (58, 4856150), (62, 4542850), (65, 4333180), (100, 2816567), (116, 2428075), (124, 2271425), (130, 2166590), (145, 1942460), (155, 1817140), (241, 1168700), (260, 1083295), (290, 971230), (310, 908570), (325, 866636), (377, 747100), (403, 698900), (482, 584350), (580, 485615), (620, 454285), (650, 433318), (725, 388492), (754, 373550), (775, 363428), (806, 349450), (899, 313300), (964, 292175), (1205, 233740), (1300, 216659), (1450, 194246), (1508, 186775), (1550, 181714), (1612, 174725), (1798, 156650), (1885, 149420), (2015, 139780), (2410, 116870), (2900, 97123), (3100, 90857), (3133, 89900), (3596, 78325), (3770, 74710), (4030, 69890), (4495, 62660), (4820, 58435), (6025, 46748), (6266, 44950), (6989, 40300), (7471, 37700), (7540, 37355), (8060, 34945), (8990, 31330), (9425, 29884), (10075, 27956), (11687, 24100), (12050, 23374), (12532, 22475), (13978, 20150), (14942, 18850), (15665, 17980)]