20780276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{11519}}^1$

素因数の和:11575

約数の個数: 24

約数和(自身を含む): 40642560

約数和(自身を除く): 19862284

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 164, 451, 902, 1804, 11519, 23038, 46076, 126709, 253418, 472279, 506836, 944558, 1889116, 5195069, 10390138, 20780276]

約数ペア:

[(1, 20780276), (2, 10390138), (4, 5195069), (11, 1889116), (22, 944558), (41, 506836), (44, 472279), (82, 253418), (164, 126709), (451, 46076), (902, 23038), (1804, 11519)]