19495420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1063}}^1$

素因数の和:1210

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 27695108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1063, 1310, 1834, 2126, 2620, 3668, 4252, 4585, 5315, 7441, 9170, 10630, 14882, 18340, 21260, 29764, 37205, 74410, 139253, 148820, 278506, 557012, 696265, 974771, 1392530, 1949542, 2785060, 3899084, 4873855, 9747710, 19495420]

約数ペア:

[(1, 19495420), (2, 9747710), (4, 4873855), (5, 3899084), (7, 2785060), (10, 1949542), (14, 1392530), (20, 974771), (28, 696265), (35, 557012), (70, 278506), (131, 148820), (140, 139253), (262, 74410), (524, 37205), (655, 29764), (917, 21260), (1063, 18340), (1310, 14882), (1834, 10630), (2126, 9170), (2620, 7441), (3668, 5315), (4252, 4585)]