28272560

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2251}}^1$

素因数の和:2421

約数の個数: 40

約数和(自身を含む): 66181776

約数和(自身を除く): 37909216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2251, 2512, 3140, 4502, 6280, 9004, 11255, 12560, 18008, 22510, 36016, 45020, 90040, 180080, 353407, 706814, 1413628, 1767035, 2827256, 3534070, 5654512, 7068140, 14136280, 28272560]

約数ペア:

[(1, 28272560), (2, 14136280), (4, 7068140), (5, 5654512), (8, 3534070), (10, 2827256), (16, 1767035), (20, 1413628), (40, 706814), (80, 353407), (157, 180080), (314, 90040), (628, 45020), (785, 36016), (1256, 22510), (1570, 18008), (2251, 12560), (2512, 11255), (3140, 9004), (4502, 6280)]