145744540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{521}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 312548544

約数和(自身を除く): 166804004

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 197, 284, 355, 394, 521, 710, 788, 985, 1042, 1420, 1970, 2084, 2605, 3940, 5210, 10420, 13987, 27974, 36991, 55948, 69935, 73982, 102637, 139870, 147964, 184955, 205274, 279740, 369910, 410548, 513185, 739820, 1026370, 2052740, 7287227, 14574454, 29148908, 36436135, 72872270, 145744540]

約数ペア:

[(1, 145744540), (2, 72872270), (4, 36436135), (5, 29148908), (10, 14574454), (20, 7287227), (71, 2052740), (142, 1026370), (197, 739820), (284, 513185), (355, 410548), (394, 369910), (521, 279740), (710, 205274), (788, 184955), (985, 147964), (1042, 139870), (1420, 102637), (1970, 73982), (2084, 69935), (2605, 55948), (3940, 36991), (5210, 27974), (10420, 13987)]