21440276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37483}}^1$

素因数の和:37511

約数の個数: 24

約数和(自身を含む): 44081184

約数和(自身を除く): 22640908

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 37483, 74966, 149932, 412313, 487279, 824626, 974558, 1649252, 1949116, 5360069, 10720138, 21440276]

約数ペア:

[(1, 21440276), (2, 10720138), (4, 5360069), (11, 1949116), (13, 1649252), (22, 974558), (26, 824626), (44, 487279), (52, 412313), (143, 149932), (286, 74966), (572, 37483)]