28759913

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:214

約数の個数: 36

約数和(自身を含む): 38052288

約数和(自身を除く): 9292375

約数列:

[1, 7, 13, 23, 49, 91, 151, 161, 169, 299, 637, 1057, 1127, 1183, 1963, 2093, 3473, 3887, 7399, 8281, 13741, 14651, 24311, 25519, 27209, 45149, 96187, 170177, 178633, 190463, 316043, 586937, 1250431, 2212301, 4108559, 28759913]

約数ペア:

[(1, 28759913), (7, 4108559), (13, 2212301), (23, 1250431), (49, 586937), (91, 316043), (151, 190463), (161, 178633), (169, 170177), (299, 96187), (637, 45149), (1057, 27209), (1127, 25519), (1183, 24311), (1963, 14651), (2093, 13741), (3473, 8281), (3887, 7399)]