15306920

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1489}}^1$

素因数の和:1757

約数の個数: 32

約数和(自身を含む): 34597800

約数和(自身を除く): 19290880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1489, 2056, 2570, 2978, 5140, 5956, 7445, 10280, 11912, 14890, 29780, 59560, 382673, 765346, 1530692, 1913365, 3061384, 3826730, 7653460, 15306920]

約数ペア:

[(1, 15306920), (2, 7653460), (4, 3826730), (5, 3061384), (8, 1913365), (10, 1530692), (20, 765346), (40, 382673), (257, 59560), (514, 29780), (1028, 14890), (1285, 11912), (1489, 10280), (2056, 7445), (2570, 5956), (2978, 5140)]