642259240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1213}}^1$

素因数の和:1323

約数の個数: 128

約数和(自身を含む): 1734174720

約数和(自身を除く): 1091915480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 61, 62, 70, 122, 124, 140, 155, 217, 244, 248, 280, 305, 310, 427, 434, 488, 610, 620, 854, 868, 1085, 1213, 1220, 1240, 1708, 1736, 1891, 2135, 2170, 2426, 2440, 3416, 3782, 4270, 4340, 4852, 6065, 7564, 8491, 8540, 8680, 9455, 9704, 12130, 13237, 15128, 16982, 17080, 18910, 24260, 26474, 33964, 37603, 37820, 42455, 48520, 52948, 66185, 67928, 73993, 75206, 75640, 84910, 105896, 132370, 147986, 150412, 169820, 188015, 263221, 264740, 295972, 300824, 339640, 369965, 376030, 517951, 526442, 529480, 591944, 739930, 752060, 1035902, 1052884, 1316105, 1479860, 1504120, 2071804, 2105768, 2293783, 2589755, 2632210, 2959720, 4143608, 4587566, 5179510, 5264420, 9175132, 10359020, 10528840, 11468915, 16056481, 18350264, 20718040, 22937830, 32112962, 45875660, 64225924, 80282405, 91751320, 128451848, 160564810, 321129620, 642259240]

約数ペア:

[(1, 642259240), (2, 321129620), (4, 160564810), (5, 128451848), (7, 91751320), (8, 80282405), (10, 64225924), (14, 45875660), (20, 32112962), (28, 22937830), (31, 20718040), (35, 18350264), (40, 16056481), (56, 11468915), (61, 10528840), (62, 10359020), (70, 9175132), (122, 5264420), (124, 5179510), (140, 4587566), (155, 4143608), (217, 2959720), (244, 2632210), (248, 2589755), (280, 2293783), (305, 2105768), (310, 2071804), (427, 1504120), (434, 1479860), (488, 1316105), (610, 1052884), (620, 1035902), (854, 752060), (868, 739930), (1085, 591944), (1213, 529480), (1220, 526442), (1240, 517951), (1708, 376030), (1736, 369965), (1891, 339640), (2135, 300824), (2170, 295972), (2426, 264740), (2440, 263221), (3416, 188015), (3782, 169820), (4270, 150412), (4340, 147986), (4852, 132370), (6065, 105896), (7564, 84910), (8491, 75640), (8540, 75206), (8680, 73993), (9455, 67928), (9704, 66185), (12130, 52948), (13237, 48520), (15128, 42455), (16982, 37820), (17080, 37603), (18910, 33964), (24260, 26474)]