19664372

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 23236108

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 89, 91, 178, 182, 356, 364, 607, 623, 1157, 1214, 1246, 2314, 2428, 2492, 4249, 4628, 7891, 8099, 8498, 15782, 16198, 16996, 31564, 32396, 54023, 55237, 108046, 110474, 216092, 220948, 378161, 702299, 756322, 1404598, 1512644, 2809196, 4916093, 9832186, 19664372]

約数ペア:

[(1, 19664372), (2, 9832186), (4, 4916093), (7, 2809196), (13, 1512644), (14, 1404598), (26, 756322), (28, 702299), (52, 378161), (89, 220948), (91, 216092), (178, 110474), (182, 108046), (356, 55237), (364, 54023), (607, 32396), (623, 31564), (1157, 16996), (1214, 16198), (1246, 15782), (2314, 8498), (2428, 8099), (2492, 7891), (4249, 4628)]