18711940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 24188540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 911, 1027, 1580, 1822, 2054, 3644, 4108, 4555, 5135, 9110, 10270, 11843, 18220, 20540, 23686, 47372, 59215, 71969, 118430, 143938, 236860, 287876, 359845, 719690, 935597, 1439380, 1871194, 3742388, 4677985, 9355970, 18711940]

約数ペア:

[(1, 18711940), (2, 9355970), (4, 4677985), (5, 3742388), (10, 1871194), (13, 1439380), (20, 935597), (26, 719690), (52, 359845), (65, 287876), (79, 236860), (130, 143938), (158, 118430), (260, 71969), (316, 59215), (395, 47372), (790, 23686), (911, 20540), (1027, 18220), (1580, 11843), (1822, 10270), (2054, 9110), (3644, 5135), (4108, 4555)]