15984980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 37001664

約数和(自身を除く): 21016684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 113, 220, 226, 452, 565, 643, 1130, 1243, 1286, 2260, 2486, 2572, 3215, 4972, 6215, 6430, 7073, 12430, 12860, 14146, 24860, 28292, 35365, 70730, 72659, 141460, 145318, 290636, 363295, 726590, 799249, 1453180, 1598498, 3196996, 3996245, 7992490, 15984980]

約数ペア:

[(1, 15984980), (2, 7992490), (4, 3996245), (5, 3196996), (10, 1598498), (11, 1453180), (20, 799249), (22, 726590), (44, 363295), (55, 290636), (110, 145318), (113, 141460), (220, 72659), (226, 70730), (452, 35365), (565, 28292), (643, 24860), (1130, 14146), (1243, 12860), (1286, 12430), (2260, 7073), (2486, 6430), (2572, 6215), (3215, 4972)]