20161211408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{309677}}^1$

素因数の和:310011

約数の個数: 40

約数和(自身を含む): 42201679128

約数和(自身を除く): 22040467720

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 313, 626, 1252, 2504, 4069, 5008, 8138, 16276, 32552, 65104, 309677, 619354, 1238708, 2477416, 4025801, 4954832, 8051602, 16103204, 32206408, 64412816, 96928901, 193857802, 387715604, 775431208, 1260075713, 1550862416, 2520151426, 5040302852, 10080605704, 20161211408]

約数ペア:

[(1, 20161211408), (2, 10080605704), (4, 5040302852), (8, 2520151426), (13, 1550862416), (16, 1260075713), (26, 775431208), (52, 387715604), (104, 193857802), (208, 96928901), (313, 64412816), (626, 32206408), (1252, 16103204), (2504, 8051602), (4069, 4954832), (5008, 4025801), (8138, 2477416), (16276, 1238708), (32552, 619354), (65104, 309677)]