28578640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8713}}^1$

素因数の和:8767

約数の個数: 40

約数和(自身を含む): 68073768

約数和(自身を除く): 39495128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 8713, 17426, 34852, 43565, 69704, 87130, 139408, 174260, 348520, 357233, 697040, 714466, 1428932, 1786165, 2857864, 3572330, 5715728, 7144660, 14289320, 28578640]

約数ペア:

[(1, 28578640), (2, 14289320), (4, 7144660), (5, 5715728), (8, 3572330), (10, 2857864), (16, 1786165), (20, 1428932), (40, 714466), (41, 697040), (80, 357233), (82, 348520), (164, 174260), (205, 139408), (328, 87130), (410, 69704), (656, 43565), (820, 34852), (1640, 17426), (3280, 8713)]