20049328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2351}}^1$

素因数の和:2413

約数の個数: 40

約数和(自身を含む): 42872256

約数和(自身を除く): 22822928

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2351, 4264, 4702, 8528, 9404, 18808, 30563, 37616, 61126, 96391, 122252, 192782, 244504, 385564, 489008, 771128, 1253083, 1542256, 2506166, 5012332, 10024664, 20049328]

約数ペア:

[(1, 20049328), (2, 10024664), (4, 5012332), (8, 2506166), (13, 1542256), (16, 1253083), (26, 771128), (41, 489008), (52, 385564), (82, 244504), (104, 192782), (164, 122252), (208, 96391), (328, 61126), (533, 37616), (656, 30563), (1066, 18808), (2132, 9404), (2351, 8528), (4264, 4702)]