201991240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{4457}}^1$

素因数の和:4582

約数の個数: 64

約数和(自身を含む): 500722560

約数和(自身を除く): 298731320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 103, 110, 206, 220, 412, 440, 515, 824, 1030, 1133, 2060, 2266, 4120, 4457, 4532, 5665, 8914, 9064, 11330, 17828, 22285, 22660, 35656, 44570, 45320, 49027, 89140, 98054, 178280, 196108, 245135, 392216, 459071, 490270, 918142, 980540, 1836284, 1961080, 2295355, 3672568, 4590710, 5049781, 9181420, 10099562, 18362840, 20199124, 25248905, 40398248, 50497810, 100995620, 201991240]

約数ペア:

[(1, 201991240), (2, 100995620), (4, 50497810), (5, 40398248), (8, 25248905), (10, 20199124), (11, 18362840), (20, 10099562), (22, 9181420), (40, 5049781), (44, 4590710), (55, 3672568), (88, 2295355), (103, 1961080), (110, 1836284), (206, 980540), (220, 918142), (412, 490270), (440, 459071), (515, 392216), (824, 245135), (1030, 196108), (1133, 178280), (2060, 98054), (2266, 89140), (4120, 49027), (4457, 45320), (4532, 44570), (5665, 35656), (8914, 22660), (9064, 22285), (11330, 17828)]