19290980

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^2\times {\mathrm{181}}^1$

素因数の和:336

約数の個数: 36

約数和(自身を含む): 41300532

約数和(自身を除く): 22009552

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 181, 292, 362, 365, 724, 730, 905, 1460, 1810, 3620, 5329, 10658, 13213, 21316, 26426, 26645, 52852, 53290, 66065, 106580, 132130, 264260, 964549, 1929098, 3858196, 4822745, 9645490, 19290980]

約数ペア:

[(1, 19290980), (2, 9645490), (4, 4822745), (5, 3858196), (10, 1929098), (20, 964549), (73, 264260), (146, 132130), (181, 106580), (292, 66065), (362, 53290), (365, 52852), (724, 26645), (730, 26426), (905, 21316), (1460, 13213), (1810, 10658), (3620, 5329)]