21037250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6473}}^1$

素因数の和:6503

約数の個数: 32

約数和(自身を含む): 42417648

約数和(自身を除く): 21380398

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6473, 12946, 32365, 64730, 84149, 161825, 168298, 323650, 420745, 809125, 841490, 1618250, 2103725, 4207450, 10518625, 21037250]

約数ペア:

[(1, 21037250), (2, 10518625), (5, 4207450), (10, 2103725), (13, 1618250), (25, 841490), (26, 809125), (50, 420745), (65, 323650), (125, 168298), (130, 161825), (250, 84149), (325, 64730), (650, 32365), (1625, 12946), (3250, 6473)]