81657820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9343}}^1$

素因数の和:9394

約数の個数: 48

約数和(自身を含む): 188375040

約数和(自身を除く): 106717220

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 4370, 8740, 9343, 18686, 37372, 46715, 93430, 177517, 186860, 214889, 355034, 429778, 710068, 859556, 887585, 1074445, 1775170, 2148890, 3550340, 4082891, 4297780, 8165782, 16331564, 20414455, 40828910, 81657820]

約数ペア:

[(1, 81657820), (2, 40828910), (4, 20414455), (5, 16331564), (10, 8165782), (19, 4297780), (20, 4082891), (23, 3550340), (38, 2148890), (46, 1775170), (76, 1074445), (92, 887585), (95, 859556), (115, 710068), (190, 429778), (230, 355034), (380, 214889), (437, 186860), (460, 177517), (874, 93430), (1748, 46715), (2185, 37372), (4370, 18686), (8740, 9343)]