20199071120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5871823}}^1$

素因数の和:5871879

約数の個数: 40

約数和(自身を含む): 48055007616

約数和(自身を除く): 27855936496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5871823, 11743646, 23487292, 29359115, 46974584, 58718230, 93949168, 117436460, 234872920, 252488389, 469745840, 504976778, 1009953556, 1262441945, 2019907112, 2524883890, 4039814224, 5049767780, 10099535560, 20199071120]

約数ペア:

[(1, 20199071120), (2, 10099535560), (4, 5049767780), (5, 4039814224), (8, 2524883890), (10, 2019907112), (16, 1262441945), (20, 1009953556), (40, 504976778), (43, 469745840), (80, 252488389), (86, 234872920), (172, 117436460), (215, 93949168), (344, 58718230), (430, 46974584), (688, 29359115), (860, 23487292), (1720, 11743646), (3440, 5871823)]