21049158

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{641}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 45515232

約数和(自身を除く): 24466074

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 421, 641, 842, 1263, 1282, 1923, 2526, 3846, 5473, 8333, 10946, 16419, 16666, 24999, 32838, 49998, 269861, 539722, 809583, 1619166, 3508193, 7016386, 10524579, 21049158]

約数ペア:

[(1, 21049158), (2, 10524579), (3, 7016386), (6, 3508193), (13, 1619166), (26, 809583), (39, 539722), (78, 269861), (421, 49998), (641, 32838), (842, 24999), (1263, 16666), (1282, 16419), (1923, 10946), (2526, 8333), (3846, 5473)]