20215510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2699}}^1$

素因数の和:2820

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 21774890

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 107, 214, 535, 749, 1070, 1498, 2699, 3745, 5398, 7490, 13495, 18893, 26990, 37786, 94465, 188930, 288793, 577586, 1443965, 2021551, 2887930, 4043102, 10107755, 20215510]

約数ペア:

[(1, 20215510), (2, 10107755), (5, 4043102), (7, 2887930), (10, 2021551), (14, 1443965), (35, 577586), (70, 288793), (107, 188930), (214, 94465), (535, 37786), (749, 26990), (1070, 18893), (1498, 13495), (2699, 7490), (3745, 5398)]