19721212

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{271}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 41674752

約数和(自身を除く): 21953540

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 113, 161, 226, 271, 322, 452, 542, 644, 791, 1084, 1582, 1897, 2599, 3164, 3794, 5198, 6233, 7588, 10396, 12466, 18193, 24932, 30623, 36386, 43631, 61246, 72772, 87262, 122492, 174524, 214361, 428722, 704329, 857444, 1408658, 2817316, 4930303, 9860606, 19721212]

約数ペア:

[(1, 19721212), (2, 9860606), (4, 4930303), (7, 2817316), (14, 1408658), (23, 857444), (28, 704329), (46, 428722), (92, 214361), (113, 174524), (161, 122492), (226, 87262), (271, 72772), (322, 61246), (452, 43631), (542, 36386), (644, 30623), (791, 24932), (1084, 18193), (1582, 12466), (1897, 10396), (2599, 7588), (3164, 6233), (3794, 5198)]