216976520

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{10657}}^1$

素因数の和:11177

約数の個数: 32

約数和(自身を含む): 489202200

約数和(自身を除く): 272225680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 10180, 10657, 20360, 21314, 42628, 53285, 85256, 106570, 213140, 426280, 5424413, 10848826, 21697652, 27122065, 43395304, 54244130, 108488260, 216976520]

約数ペア:

[(1, 216976520), (2, 108488260), (4, 54244130), (5, 43395304), (8, 27122065), (10, 21697652), (20, 10848826), (40, 5424413), (509, 426280), (1018, 213140), (2036, 106570), (2545, 85256), (4072, 53285), (5090, 42628), (10180, 21314), (10657, 20360)]