20929870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1229}}^1$

素因数の和:1380

約数の個数: 32

約数和(自身を含む): 40914720

約数和(自身を除く): 19984850

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1229, 1310, 1703, 2458, 3406, 6145, 8515, 12290, 15977, 17030, 31954, 79885, 159770, 160999, 321998, 804995, 1609990, 2092987, 4185974, 10464935, 20929870]

約数ペア:

[(1, 20929870), (2, 10464935), (5, 4185974), (10, 2092987), (13, 1609990), (26, 804995), (65, 321998), (130, 160999), (131, 159770), (262, 79885), (655, 31954), (1229, 17030), (1310, 15977), (1703, 12290), (2458, 8515), (3406, 6145)]