18491960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3529}}^1$

素因数の和:3671

約数の個数: 32

約数和(自身を含む): 41936400

約数和(自身を除く): 23444440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3529, 5240, 7058, 14116, 17645, 28232, 35290, 70580, 141160, 462299, 924598, 1849196, 2311495, 3698392, 4622990, 9245980, 18491960]

約数ペア:

[(1, 18491960), (2, 9245980), (4, 4622990), (5, 3698392), (8, 2311495), (10, 1849196), (20, 924598), (40, 462299), (131, 141160), (262, 70580), (524, 35290), (655, 28232), (1048, 17645), (1310, 14116), (2620, 7058), (3529, 5240)]