20088405

素因数分解:

$3^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 36337752

約数和(自身を除く): 16249347

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 193, 257, 405, 579, 771, 965, 1285, 1737, 2313, 2895, 3855, 5211, 6939, 8685, 11565, 15633, 20817, 26055, 34695, 49601, 78165, 104085, 148803, 248005, 446409, 744015, 1339227, 2232045, 4017681, 6696135, 20088405]

約数ペア:

[(1, 20088405), (3, 6696135), (5, 4017681), (9, 2232045), (15, 1339227), (27, 744015), (45, 446409), (81, 248005), (135, 148803), (193, 104085), (257, 78165), (405, 49601), (579, 34695), (771, 26055), (965, 20817), (1285, 15633), (1737, 11565), (2313, 8685), (2895, 6939), (3855, 5211)]