18711140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:397

約数の個数: 72

約数和(自身を含む): 46606392

約数和(自身を除く): 27895252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 313, 427, 490, 610, 626, 854, 980, 1220, 1252, 1565, 1708, 2135, 2191, 2989, 3130, 4270, 4382, 5978, 6260, 8540, 8764, 10955, 11956, 14945, 15337, 19093, 21910, 29890, 30674, 38186, 43820, 59780, 61348, 76372, 76685, 95465, 133651, 153370, 190930, 267302, 306740, 381860, 534604, 668255, 935557, 1336510, 1871114, 2673020, 3742228, 4677785, 9355570, 18711140]

約数ペア:

[(1, 18711140), (2, 9355570), (4, 4677785), (5, 3742228), (7, 2673020), (10, 1871114), (14, 1336510), (20, 935557), (28, 668255), (35, 534604), (49, 381860), (61, 306740), (70, 267302), (98, 190930), (122, 153370), (140, 133651), (196, 95465), (244, 76685), (245, 76372), (305, 61348), (313, 59780), (427, 43820), (490, 38186), (610, 30674), (626, 29890), (854, 21910), (980, 19093), (1220, 15337), (1252, 14945), (1565, 11956), (1708, 10955), (2135, 8764), (2191, 8540), (2989, 6260), (3130, 5978), (4270, 4382)]