200720420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{244781}}^1$

素因数の和:244831

約数の個数: 24

約数和(自身を含む): 431795448

約数和(自身を除く): 231075028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 244781, 489562, 979124, 1223905, 2447810, 4895620, 10036021, 20072042, 40144084, 50180105, 100360210, 200720420]

約数ペア:

[(1, 200720420), (2, 100360210), (4, 50180105), (5, 40144084), (10, 20072042), (20, 10036021), (41, 4895620), (82, 2447810), (164, 1223905), (205, 979124), (410, 489562), (820, 244781)]