28637975

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 36671760

約数和(自身を除く): 8033785

約数列:

[1, 5, 25, 61, 89, 211, 305, 445, 1055, 1525, 2225, 5275, 5429, 12871, 18779, 27145, 64355, 93895, 135725, 321775, 469475, 1145519, 5727595, 28637975]

約数ペア:

[(1, 28637975), (5, 5727595), (25, 1145519), (61, 469475), (89, 321775), (211, 135725), (305, 93895), (445, 64355), (1055, 27145), (1525, 18779), (2225, 12871), (5275, 5429)]