18907110

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{499}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 49374000

約数和(自身を除く): 30466890

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 421, 499, 842, 998, 1263, 1497, 2105, 2495, 2526, 2994, 3789, 4210, 4491, 4990, 6315, 7485, 7578, 8982, 12630, 14970, 18945, 22455, 37890, 44910, 210079, 420158, 630237, 1050395, 1260474, 1890711, 2100790, 3151185, 3781422, 6302370, 9453555, 18907110]

約数ペア:

[(1, 18907110), (2, 9453555), (3, 6302370), (5, 3781422), (6, 3151185), (9, 2100790), (10, 1890711), (15, 1260474), (18, 1050395), (30, 630237), (45, 420158), (90, 210079), (421, 44910), (499, 37890), (842, 22455), (998, 18945), (1263, 14970), (1497, 12630), (2105, 8982), (2495, 7578), (2526, 7485), (2994, 6315), (3789, 4990), (4210, 4491)]