81138005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{601}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 110035968

約数和(自身を除く): 28897963

約数列:

[1, 5, 13, 31, 65, 67, 155, 335, 403, 601, 871, 2015, 2077, 3005, 4355, 7813, 10385, 18631, 27001, 39065, 40267, 93155, 135005, 201335, 242203, 523471, 1211015, 1248277, 2617355, 6241385, 16227601, 81138005]

約数ペア:

[(1, 81138005), (5, 16227601), (13, 6241385), (31, 2617355), (65, 1248277), (67, 1211015), (155, 523471), (335, 242203), (403, 201335), (601, 135005), (871, 93155), (2015, 40267), (2077, 39065), (3005, 27001), (4355, 18631), (7813, 10385)]