81128515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:463

約数の個数: 32

約数和(自身を含む): 109509120

約数和(自身を除く): 28380605

約数列:

[1, 5, 13, 29, 65, 145, 193, 223, 377, 965, 1115, 1885, 2509, 2899, 5597, 6467, 12545, 14495, 27985, 32335, 43039, 72761, 84071, 215195, 363805, 420355, 559507, 1248131, 2797535, 6240655, 16225703, 81128515]

約数ペア:

[(1, 81128515), (5, 16225703), (13, 6240655), (29, 2797535), (65, 1248131), (145, 559507), (193, 420355), (223, 363805), (377, 215195), (965, 84071), (1115, 72761), (1885, 43039), (2509, 32335), (2899, 27985), (5597, 14495), (6467, 12545)]