201988888

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{601}}^1\times {\mathrm{977}}^1$

素因数の和:1627

約数の個数: 32

約数和(自身を含む): 388578960

約数和(自身を除く): 186590072

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 601, 977, 1202, 1954, 2404, 3908, 4808, 7816, 25843, 42011, 51686, 84022, 103372, 168044, 206744, 336088, 587177, 1174354, 2348708, 4697416, 25248611, 50497222, 100994444, 201988888]

約数ペア:

[(1, 201988888), (2, 100994444), (4, 50497222), (8, 25248611), (43, 4697416), (86, 2348708), (172, 1174354), (344, 587177), (601, 336088), (977, 206744), (1202, 168044), (1954, 103372), (2404, 84022), (3908, 51686), (4808, 42011), (7816, 25843)]