21098636

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{23}}^2\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 54

約数和(自身を含む): 42503580

約数和(自身を除く): 21404944

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 59, 92, 118, 169, 236, 299, 338, 529, 598, 676, 767, 1058, 1196, 1357, 1534, 2116, 2714, 3068, 3887, 5428, 6877, 7774, 9971, 13754, 15548, 17641, 19942, 27508, 31211, 35282, 39884, 62422, 70564, 89401, 124844, 178802, 229333, 357604, 405743, 458666, 811486, 917332, 1622972, 5274659, 10549318, 21098636]

約数ペア:

[(1, 21098636), (2, 10549318), (4, 5274659), (13, 1622972), (23, 917332), (26, 811486), (46, 458666), (52, 405743), (59, 357604), (92, 229333), (118, 178802), (169, 124844), (236, 89401), (299, 70564), (338, 62422), (529, 39884), (598, 35282), (676, 31211), (767, 27508), (1058, 19942), (1196, 17641), (1357, 15548), (1534, 13754), (2116, 9971), (2714, 7774), (3068, 6877), (3887, 5428)]