164590040

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{6521}}^1$

素因数の和:7163

約数の個数: 32

約数和(自身を含む): 370971360

約数和(自身を除く): 206381320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 3155, 5048, 6310, 6521, 12620, 13042, 25240, 26084, 32605, 52168, 65210, 130420, 260840, 4114751, 8229502, 16459004, 20573755, 32918008, 41147510, 82295020, 164590040]

約数ペア:

[(1, 164590040), (2, 82295020), (4, 41147510), (5, 32918008), (8, 20573755), (10, 16459004), (20, 8229502), (40, 4114751), (631, 260840), (1262, 130420), (2524, 65210), (3155, 52168), (5048, 32605), (6310, 26084), (6521, 25240), (12620, 13042)]