66640975

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 85106160

約数和(自身を除く): 18465185

約数列:

[1, 5, 25, 61, 89, 305, 445, 491, 1525, 2225, 2455, 5429, 12275, 27145, 29951, 43699, 135725, 149755, 218495, 748775, 1092475, 2665639, 13328195, 66640975]

約数ペア:

[(1, 66640975), (5, 13328195), (25, 2665639), (61, 1092475), (89, 748775), (305, 218495), (445, 149755), (491, 135725), (1525, 43699), (2225, 29951), (2455, 27145), (5429, 12275)]