28433665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 38578176

約数和(自身を除く): 10144511

約数列:

[1, 5, 13, 31, 65, 103, 137, 155, 403, 515, 685, 1339, 1781, 2015, 3193, 4247, 6695, 8905, 14111, 15965, 21235, 41509, 55211, 70555, 183443, 207545, 276055, 437441, 917215, 2187205, 5686733, 28433665]

約数ペア:

[(1, 28433665), (5, 5686733), (13, 2187205), (31, 917215), (65, 437441), (103, 276055), (137, 207545), (155, 183443), (403, 70555), (515, 55211), (685, 41509), (1339, 21235), (1781, 15965), (2015, 14111), (3193, 8905), (4247, 6695)]