20461779

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^2$

素因数の和:188

約数の個数: 36

約数和(自身を含む): 33048288

約数和(自身を除く): 12586509

約数列:

[1, 3, 9, 13, 39, 47, 61, 117, 141, 183, 423, 549, 611, 793, 1833, 2379, 2867, 3721, 5499, 7137, 8601, 11163, 25803, 33489, 37271, 48373, 111813, 145119, 174887, 335439, 435357, 524661, 1573983, 2273531, 6820593, 20461779]

約数ペア:

[(1, 20461779), (3, 6820593), (9, 2273531), (13, 1573983), (39, 524661), (47, 435357), (61, 335439), (117, 174887), (141, 145119), (183, 111813), (423, 48373), (549, 37271), (611, 33489), (793, 25803), (1833, 11163), (2379, 8601), (2867, 7137), (3721, 5499)]