21262948

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 44884224

約数和(自身を除く): 23621276

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 137, 161, 241, 274, 322, 482, 548, 644, 959, 964, 1687, 1918, 3151, 3374, 3836, 5543, 6302, 6748, 11086, 12604, 22057, 22172, 33017, 38801, 44114, 66034, 77602, 88228, 132068, 155204, 231119, 462238, 759391, 924476, 1518782, 3037564, 5315737, 10631474, 21262948]

約数ペア:

[(1, 21262948), (2, 10631474), (4, 5315737), (7, 3037564), (14, 1518782), (23, 924476), (28, 759391), (46, 462238), (92, 231119), (137, 155204), (161, 132068), (241, 88228), (274, 77602), (322, 66034), (482, 44114), (548, 38801), (644, 33017), (959, 22172), (964, 22057), (1687, 12604), (1918, 11086), (3151, 6748), (3374, 6302), (3836, 5543)]