401489680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:257

約数の個数: 160

約数和(自身を含む): 1041361920

約数和(自身を除く): 639872240

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 89, 107, 124, 136, 155, 170, 178, 214, 248, 272, 310, 340, 356, 428, 445, 496, 527, 535, 620, 680, 712, 856, 890, 1054, 1070, 1240, 1360, 1424, 1513, 1712, 1780, 1819, 2108, 2140, 2480, 2635, 2759, 3026, 3317, 3560, 3638, 4216, 4280, 5270, 5518, 6052, 6634, 7120, 7276, 7565, 8432, 8560, 9095, 9523, 10540, 11036, 12104, 13268, 13795, 14552, 15130, 16585, 18190, 19046, 21080, 22072, 24208, 26536, 27590, 29104, 30260, 33170, 36380, 38092, 42160, 44144, 46903, 47615, 53072, 55180, 56389, 60520, 66340, 72760, 76184, 93806, 95230, 110360, 112778, 121040, 132680, 145520, 152368, 161891, 187612, 190460, 220720, 225556, 234515, 265360, 281945, 295213, 323782, 375224, 380920, 451112, 469030, 563890, 590426, 647564, 750448, 761840, 809455, 902224, 938060, 1127780, 1180852, 1295128, 1476065, 1618910, 1876120, 2255560, 2361704, 2590256, 2952130, 3237820, 3752240, 4511120, 4723408, 5018621, 5904260, 6475640, 10037242, 11808520, 12951280, 20074484, 23617040, 25093105, 40148968, 50186210, 80297936, 100372420, 200744840, 401489680]

約数ペア:

[(1, 401489680), (2, 200744840), (4, 100372420), (5, 80297936), (8, 50186210), (10, 40148968), (16, 25093105), (17, 23617040), (20, 20074484), (31, 12951280), (34, 11808520), (40, 10037242), (62, 6475640), (68, 5904260), (80, 5018621), (85, 4723408), (89, 4511120), (107, 3752240), (124, 3237820), (136, 2952130), (155, 2590256), (170, 2361704), (178, 2255560), (214, 1876120), (248, 1618910), (272, 1476065), (310, 1295128), (340, 1180852), (356, 1127780), (428, 938060), (445, 902224), (496, 809455), (527, 761840), (535, 750448), (620, 647564), (680, 590426), (712, 563890), (856, 469030), (890, 451112), (1054, 380920), (1070, 375224), (1240, 323782), (1360, 295213), (1424, 281945), (1513, 265360), (1712, 234515), (1780, 225556), (1819, 220720), (2108, 190460), (2140, 187612), (2480, 161891), (2635, 152368), (2759, 145520), (3026, 132680), (3317, 121040), (3560, 112778), (3638, 110360), (4216, 95230), (4280, 93806), (5270, 76184), (5518, 72760), (6052, 66340), (6634, 60520), (7120, 56389), (7276, 55180), (7565, 53072), (8432, 47615), (8560, 46903), (9095, 44144), (9523, 42160), (10540, 38092), (11036, 36380), (12104, 33170), (13268, 30260), (13795, 29104), (14552, 27590), (15130, 26536), (16585, 24208), (18190, 22072), (19046, 21080)]