20623408

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:326

約数の個数: 60

約数和(自身を含む): 44930160

約数和(自身を除く): 24306752

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 104, 116, 169, 208, 232, 263, 338, 377, 464, 526, 676, 754, 1052, 1352, 1508, 2104, 2704, 3016, 3419, 4208, 4901, 6032, 6838, 7627, 9802, 13676, 15254, 19604, 27352, 30508, 39208, 44447, 54704, 61016, 78416, 88894, 99151, 122032, 177788, 198302, 355576, 396604, 711152, 793208, 1288963, 1586416, 2577926, 5155852, 10311704, 20623408]

約数ペア:

[(1, 20623408), (2, 10311704), (4, 5155852), (8, 2577926), (13, 1586416), (16, 1288963), (26, 793208), (29, 711152), (52, 396604), (58, 355576), (104, 198302), (116, 177788), (169, 122032), (208, 99151), (232, 88894), (263, 78416), (338, 61016), (377, 54704), (464, 44447), (526, 39208), (676, 30508), (754, 27352), (1052, 19604), (1352, 15254), (1508, 13676), (2104, 9802), (2704, 7627), (3016, 6838), (3419, 6032), (4208, 4901)]