204901820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{2371}}^1$

素因数の和:2558

約数の個数: 48

約数和(自身を含む): 448308000

約数和(自身を除く): 243406180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 149, 290, 298, 580, 596, 745, 1490, 2371, 2980, 4321, 4742, 8642, 9484, 11855, 17284, 21605, 23710, 43210, 47420, 68759, 86420, 137518, 275036, 343795, 353279, 687590, 706558, 1375180, 1413116, 1766395, 3532790, 7065580, 10245091, 20490182, 40980364, 51225455, 102450910, 204901820]

約数ペア:

[(1, 204901820), (2, 102450910), (4, 51225455), (5, 40980364), (10, 20490182), (20, 10245091), (29, 7065580), (58, 3532790), (116, 1766395), (145, 1413116), (149, 1375180), (290, 706558), (298, 687590), (580, 353279), (596, 343795), (745, 275036), (1490, 137518), (2371, 86420), (2980, 68759), (4321, 47420), (4742, 43210), (8642, 23710), (9484, 21605), (11855, 17284)]