2005990120

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{634807}}^1$

素因数の和:634897

約数の個数: 32

約数和(自身を含む): 4570617600

約数和(自身を除く): 2564627480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 634807, 1269614, 2539228, 3174035, 5078456, 6348070, 12696140, 25392280, 50149753, 100299506, 200599012, 250748765, 401198024, 501497530, 1002995060, 2005990120]

約数ペア:

[(1, 2005990120), (2, 1002995060), (4, 501497530), (5, 401198024), (8, 250748765), (10, 200599012), (20, 100299506), (40, 50149753), (79, 25392280), (158, 12696140), (316, 6348070), (395, 5078456), (632, 3174035), (790, 2539228), (1580, 1269614), (3160, 634807)]