20818930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{3571}}^1$

素因数の和:3642

約数の個数: 32

約数和(自身を含む): 41663808

約数和(自身を除く): 20844878

約数列:

[1, 2, 5, 10, 11, 22, 53, 55, 106, 110, 265, 530, 583, 1166, 2915, 3571, 5830, 7142, 17855, 35710, 39281, 78562, 189263, 196405, 378526, 392810, 946315, 1892630, 2081893, 4163786, 10409465, 20818930]

約数ペア:

[(1, 20818930), (2, 10409465), (5, 4163786), (10, 2081893), (11, 1892630), (22, 946315), (53, 392810), (55, 378526), (106, 196405), (110, 189263), (265, 78562), (530, 39281), (583, 35710), (1166, 17855), (2915, 7142), (3571, 5830)]