21983750

素因数分解:

$2^1\times 5^4\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:474

約数の個数: 40

約数和(自身を含む): 42267720

約数和(自身を除く): 20283970

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 125, 215, 250, 409, 430, 625, 818, 1075, 1250, 2045, 2150, 4090, 5375, 10225, 10750, 17587, 20450, 26875, 35174, 51125, 53750, 87935, 102250, 175870, 255625, 439675, 511250, 879350, 2198375, 4396750, 10991875, 21983750]

約数ペア:

[(1, 21983750), (2, 10991875), (5, 4396750), (10, 2198375), (25, 879350), (43, 511250), (50, 439675), (86, 255625), (125, 175870), (215, 102250), (250, 87935), (409, 53750), (430, 51125), (625, 35174), (818, 26875), (1075, 20450), (1250, 17587), (2045, 10750), (2150, 10225), (4090, 5375)]