420708560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{122299}}^1$

素因数の和:122355

約数の個数: 40

約数和(自身を含む): 1000903200

約数和(自身を除く): 580194640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 122299, 244598, 489196, 611495, 978392, 1222990, 1956784, 2445980, 4891960, 5258857, 9783920, 10517714, 21035428, 26294285, 42070856, 52588570, 84141712, 105177140, 210354280, 420708560]

約数ペア:

[(1, 420708560), (2, 210354280), (4, 105177140), (5, 84141712), (8, 52588570), (10, 42070856), (16, 26294285), (20, 21035428), (40, 10517714), (43, 9783920), (80, 5258857), (86, 4891960), (172, 2445980), (215, 1956784), (344, 1222990), (430, 978392), (688, 611495), (860, 489196), (1720, 244598), (3440, 122299)]