20197498520

素因数分解:

$2^3\times 5^1\times {\mathrm{7723}}^1\times {\mathrm{65381}}^1$

素因数の和:73115

約数の個数: 32

約数和(自身を含む): 45450951120

約数和(自身を除く): 25253452600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7723, 15446, 30892, 38615, 61784, 65381, 77230, 130762, 154460, 261524, 308920, 326905, 523048, 653810, 1307620, 2615240, 504937463, 1009874926, 2019749852, 2524687315, 4039499704, 5049374630, 10098749260, 20197498520]

約数ペア:

[(1, 20197498520), (2, 10098749260), (4, 5049374630), (5, 4039499704), (8, 2524687315), (10, 2019749852), (20, 1009874926), (40, 504937463), (7723, 2615240), (15446, 1307620), (30892, 653810), (38615, 523048), (61784, 326905), (65381, 308920), (77230, 261524), (130762, 154460)]