311507840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2243}}^1$

素因数の和:2300

約数の個数: 128

約数和(自身を含む): 878929920

約数和(自身を除く): 567422080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 640, 868, 896, 992, 1085, 1120, 1240, 1736, 1984, 2170, 2240, 2243, 2480, 3472, 3968, 4340, 4480, 4486, 4960, 6944, 8680, 8972, 9920, 11215, 13888, 15701, 17360, 17944, 19840, 22430, 27776, 31402, 34720, 35888, 44860, 62804, 69440, 69533, 71776, 78505, 89720, 125608, 138880, 139066, 143552, 157010, 179440, 251216, 278132, 287104, 314020, 347665, 358880, 486731, 502432, 556264, 628040, 695330, 717760, 973462, 1004864, 1112528, 1256080, 1390660, 1435520, 1946924, 2009728, 2225056, 2433655, 2512160, 2781320, 3893848, 4450112, 4867310, 5024320, 5562640, 7787696, 8900224, 9734620, 10048640, 11125280, 15575392, 19469240, 22250560, 31150784, 38938480, 44501120, 62301568, 77876960, 155753920, 311507840]

約数ペア:

[(1, 311507840), (2, 155753920), (4, 77876960), (5, 62301568), (7, 44501120), (8, 38938480), (10, 31150784), (14, 22250560), (16, 19469240), (20, 15575392), (28, 11125280), (31, 10048640), (32, 9734620), (35, 8900224), (40, 7787696), (56, 5562640), (62, 5024320), (64, 4867310), (70, 4450112), (80, 3893848), (112, 2781320), (124, 2512160), (128, 2433655), (140, 2225056), (155, 2009728), (160, 1946924), (217, 1435520), (224, 1390660), (248, 1256080), (280, 1112528), (310, 1004864), (320, 973462), (434, 717760), (448, 695330), (496, 628040), (560, 556264), (620, 502432), (640, 486731), (868, 358880), (896, 347665), (992, 314020), (1085, 287104), (1120, 278132), (1240, 251216), (1736, 179440), (1984, 157010), (2170, 143552), (2240, 139066), (2243, 138880), (2480, 125608), (3472, 89720), (3968, 78505), (4340, 71776), (4480, 69533), (4486, 69440), (4960, 62804), (6944, 44860), (8680, 35888), (8972, 34720), (9920, 31402), (11215, 27776), (13888, 22430), (15701, 19840), (17360, 17944)]