208021960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{120943}}^1$

素因数の和:120997

約数の個数: 32

約数和(自身を含む): 478938240

約数和(自身を除く): 270916280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 120943, 241886, 483772, 604715, 967544, 1209430, 2418860, 4837720, 5200549, 10401098, 20802196, 26002745, 41604392, 52005490, 104010980, 208021960]

約数ペア:

[(1, 208021960), (2, 104010980), (4, 52005490), (5, 41604392), (8, 26002745), (10, 20802196), (20, 10401098), (40, 5200549), (43, 4837720), (86, 2418860), (172, 1209430), (215, 967544), (344, 604715), (430, 483772), (860, 241886), (1720, 120943)]