199917486520

素因数分解:

$2^3\times 5^1\times {\mathrm{4997937163}}^1$

素因数の和:4997937174

約数の個数: 16

約数和(自身を含む): 449814344760

約数和(自身を除く): 249896858240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4997937163, 9995874326, 19991748652, 24989685815, 39983497304, 49979371630, 99958743260, 199917486520]

約数ペア:

[(1, 199917486520), (2, 99958743260), (4, 49979371630), (5, 39983497304), (8, 24989685815), (10, 19991748652), (20, 9995874326), (40, 4997937163)]