31709931

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 48168960

約数和(自身を除く): 16459029

約数列:

[1, 3, 11, 31, 33, 93, 139, 223, 341, 417, 669, 1023, 1529, 2453, 4309, 4587, 6913, 7359, 12927, 20739, 30997, 47399, 76043, 92991, 142197, 228129, 340967, 960907, 1022901, 2882721, 10569977, 31709931]

約数ペア:

[(1, 31709931), (3, 10569977), (11, 2882721), (31, 1022901), (33, 960907), (93, 340967), (139, 228129), (223, 142197), (341, 92991), (417, 76043), (669, 47399), (1023, 30997), (1529, 20739), (2453, 12927), (4309, 7359), (4587, 6913)]