990306375

素因数分解:

$3^1\times 5^3\times {\mathrm{103}}^1\times {\mathrm{25639}}^1$

素因数の和:25760

約数の個数: 32

約数和(自身を含む): 1663933440

約数和(自身を除く): 673627065

約数列:

[1, 3, 5, 15, 25, 75, 103, 125, 309, 375, 515, 1545, 2575, 7725, 12875, 25639, 38625, 76917, 128195, 384585, 640975, 1922925, 2640817, 3204875, 7922451, 9614625, 13204085, 39612255, 66020425, 198061275, 330102125, 990306375]

約数ペア:

[(1, 990306375), (3, 330102125), (5, 198061275), (15, 66020425), (25, 39612255), (75, 13204085), (103, 9614625), (125, 7922451), (309, 3204875), (375, 2640817), (515, 1922925), (1545, 640975), (2575, 384585), (7725, 128195), (12875, 76917), (25639, 38625)]