28980040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23371}}^1$

素因数の和:23413

約数の個数: 32

約数和(自身を含む): 67311360

約数和(自身を除く): 38331320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 23371, 46742, 93484, 116855, 186968, 233710, 467420, 724501, 934840, 1449002, 2898004, 3622505, 5796008, 7245010, 14490020, 28980040]

約数ペア:

[(1, 28980040), (2, 14490020), (4, 7245010), (5, 5796008), (8, 3622505), (10, 2898004), (20, 1449002), (31, 934840), (40, 724501), (62, 467420), (124, 233710), (155, 186968), (248, 116855), (310, 93484), (620, 46742), (1240, 23371)]