12138515

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1103}}^1$

素因数の和:1210

約数の個数: 16

約数和(自身を含む): 15261696

約数和(自身を除く): 3123181

約数列:

[1, 5, 31, 71, 155, 355, 1103, 2201, 5515, 11005, 34193, 78313, 170965, 391565, 2427703, 12138515]

約数ペア:

[(1, 12138515), (5, 2427703), (31, 391565), (71, 170965), (155, 78313), (355, 34193), (1103, 11005), (2201, 5515)]