399433390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{21673}}^1$

素因数の和:21796

約数の個数: 32

約数和(自身を含む): 764658720

約数和(自身を除く): 365225330

約数列:

[1, 2, 5, 10, 19, 38, 95, 97, 190, 194, 485, 970, 1843, 3686, 9215, 18430, 21673, 43346, 108365, 216730, 411787, 823574, 2058935, 2102281, 4117870, 4204562, 10511405, 21022810, 39943339, 79886678, 199716695, 399433390]

約数ペア:

[(1, 399433390), (2, 199716695), (5, 79886678), (10, 39943339), (19, 21022810), (38, 10511405), (95, 4204562), (97, 4117870), (190, 2102281), (194, 2058935), (485, 823574), (970, 411787), (1843, 216730), (3686, 108365), (9215, 43346), (18430, 21673)]