18248540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 40279680

約数和(自身を除く): 22031140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 290, 292, 365, 431, 580, 730, 862, 1460, 1724, 2117, 2155, 4234, 4310, 8468, 8620, 10585, 12499, 21170, 24998, 31463, 42340, 49996, 62495, 62926, 124990, 125852, 157315, 249980, 314630, 629260, 912427, 1824854, 3649708, 4562135, 9124270, 18248540]

約数ペア:

[(1, 18248540), (2, 9124270), (4, 4562135), (5, 3649708), (10, 1824854), (20, 912427), (29, 629260), (58, 314630), (73, 249980), (116, 157315), (145, 125852), (146, 124990), (290, 62926), (292, 62495), (365, 49996), (431, 42340), (580, 31463), (730, 24998), (862, 21170), (1460, 12499), (1724, 10585), (2117, 8620), (2155, 8468), (4234, 4310)]