161621200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31081}}^1$

素因数の和:31112

約数の個数: 60

約数和(自身を含む): 418177228

約数和(自身を除く): 256556028

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 31081, 62162, 124324, 155405, 248648, 310810, 404053, 497296, 621620, 777025, 808106, 1243240, 1554050, 1616212, 2020265, 2486480, 3108100, 3232424, 4040530, 6216200, 6464848, 8081060, 10101325, 12432400, 16162120, 20202650, 32324240, 40405300, 80810600, 161621200]

約数ペア:

[(1, 161621200), (2, 80810600), (4, 40405300), (5, 32324240), (8, 20202650), (10, 16162120), (13, 12432400), (16, 10101325), (20, 8081060), (25, 6464848), (26, 6216200), (40, 4040530), (50, 3232424), (52, 3108100), (65, 2486480), (80, 2020265), (100, 1616212), (104, 1554050), (130, 1243240), (200, 808106), (208, 777025), (260, 621620), (325, 497296), (400, 404053), (520, 310810), (650, 248648), (1040, 155405), (1300, 124324), (2600, 62162), (5200, 31081)]