89800040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{499}}^1$

素因数の和:930

約数の個数: 64

約数和(自身を含む): 221400000

約数和(自身を除く): 131599960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 409, 440, 499, 818, 998, 1636, 1996, 2045, 2495, 3272, 3992, 4090, 4499, 4990, 5489, 8180, 8998, 9980, 10978, 16360, 17996, 19960, 21956, 22495, 27445, 35992, 43912, 44990, 54890, 89980, 109780, 179960, 204091, 219560, 408182, 816364, 1020455, 1632728, 2040910, 2245001, 4081820, 4490002, 8163640, 8980004, 11225005, 17960008, 22450010, 44900020, 89800040]

約数ペア:

[(1, 89800040), (2, 44900020), (4, 22450010), (5, 17960008), (8, 11225005), (10, 8980004), (11, 8163640), (20, 4490002), (22, 4081820), (40, 2245001), (44, 2040910), (55, 1632728), (88, 1020455), (110, 816364), (220, 408182), (409, 219560), (440, 204091), (499, 179960), (818, 109780), (998, 89980), (1636, 54890), (1996, 44990), (2045, 43912), (2495, 35992), (3272, 27445), (3992, 22495), (4090, 21956), (4499, 19960), (4990, 17996), (5489, 16360), (8180, 10978), (8998, 9980)]