5178740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 12628224

約数和(自身を除く): 7449484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 521, 710, 994, 1042, 1420, 1988, 2084, 2485, 2605, 3647, 4970, 5210, 7294, 9940, 10420, 14588, 18235, 36470, 36991, 72940, 73982, 147964, 184955, 258937, 369910, 517874, 739820, 1035748, 1294685, 2589370, 5178740]

約数ペア:

[(1, 5178740), (2, 2589370), (4, 1294685), (5, 1035748), (7, 739820), (10, 517874), (14, 369910), (20, 258937), (28, 184955), (35, 147964), (70, 73982), (71, 72940), (140, 36991), (142, 36470), (284, 18235), (355, 14588), (497, 10420), (521, 9940), (710, 7294), (994, 5210), (1042, 4970), (1420, 3647), (1988, 2605), (2084, 2485)]