20878518

素因数分解:

$2^1\times 3^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{263}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 42653952

約数和(自身を除く): 21775434

約数列:

[1, 2, 3, 6, 101, 131, 202, 262, 263, 303, 393, 526, 606, 786, 789, 1578, 13231, 26462, 26563, 34453, 39693, 53126, 68906, 79386, 79689, 103359, 159378, 206718, 3479753, 6959506, 10439259, 20878518]

約数ペア:

[(1, 20878518), (2, 10439259), (3, 6959506), (6, 3479753), (101, 206718), (131, 159378), (202, 103359), (262, 79689), (263, 79386), (303, 68906), (393, 53126), (526, 39693), (606, 34453), (786, 26563), (789, 26462), (1578, 13231)]