20779564

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{521}}^1$

素因数の和:610

約数の個数: 36

約数和(自身を含む): 40120920

約数和(自身を除く): 19341356

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 169, 236, 338, 521, 676, 767, 1042, 1534, 2084, 3068, 6773, 9971, 13546, 19942, 27092, 30739, 39884, 61478, 88049, 122956, 176098, 352196, 399607, 799214, 1598428, 5194891, 10389782, 20779564]

約数ペア:

[(1, 20779564), (2, 10389782), (4, 5194891), (13, 1598428), (26, 799214), (52, 399607), (59, 352196), (118, 176098), (169, 122956), (236, 88049), (338, 61478), (521, 39884), (676, 30739), (767, 27092), (1042, 19942), (1534, 13546), (2084, 9971), (3068, 6773)]