18481240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{941}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 41711760

約数和(自身を除く): 23230520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 941, 982, 1882, 1964, 2455, 3764, 3928, 4705, 4910, 7528, 9410, 9820, 18820, 19640, 37640, 462031, 924062, 1848124, 2310155, 3696248, 4620310, 9240620, 18481240]

約数ペア:

[(1, 18481240), (2, 9240620), (4, 4620310), (5, 3696248), (8, 2310155), (10, 1848124), (20, 924062), (40, 462031), (491, 37640), (941, 19640), (982, 18820), (1882, 9820), (1964, 9410), (2455, 7528), (3764, 4910), (3928, 4705)]