21568664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 24879976

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 71, 92, 104, 127, 142, 184, 254, 284, 299, 508, 568, 598, 923, 1016, 1196, 1633, 1651, 1846, 2392, 2921, 3266, 3302, 3692, 5842, 6532, 6604, 7384, 9017, 11684, 13064, 13208, 18034, 21229, 23368, 36068, 37973, 42458, 72136, 75946, 84916, 117221, 151892, 169832, 207391, 234442, 303784, 414782, 468884, 829564, 937768, 1659128, 2696083, 5392166, 10784332, 21568664]

約数ペア:

[(1, 21568664), (2, 10784332), (4, 5392166), (8, 2696083), (13, 1659128), (23, 937768), (26, 829564), (46, 468884), (52, 414782), (71, 303784), (92, 234442), (104, 207391), (127, 169832), (142, 151892), (184, 117221), (254, 84916), (284, 75946), (299, 72136), (508, 42458), (568, 37973), (598, 36068), (923, 23368), (1016, 21229), (1196, 18034), (1633, 13208), (1651, 13064), (1846, 11684), (2392, 9017), (2921, 7384), (3266, 6604), (3302, 6532), (3692, 5842)]