201290420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127399}}^1$

素因数の和:127487

約数の個数: 24

約数和(自身を含む): 428064000

約数和(自身を除く): 226773580

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 127399, 254798, 509596, 636995, 1273990, 2547980, 10064521, 20129042, 40258084, 50322605, 100645210, 201290420]

約数ペア:

[(1, 201290420), (2, 100645210), (4, 50322605), (5, 40258084), (10, 20129042), (20, 10064521), (79, 2547980), (158, 1273990), (316, 636995), (395, 509596), (790, 254798), (1580, 127399)]