28902940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1663}}^1$

素因数の和:1762

約数の個数: 48

約数和(自身を含む): 67092480

約数和(自身を除く): 38189540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1663, 1738, 3326, 3476, 4345, 6652, 8315, 8690, 16630, 17380, 18293, 33260, 36586, 73172, 91465, 131377, 182930, 262754, 365860, 525508, 656885, 1313770, 1445147, 2627540, 2890294, 5780588, 7225735, 14451470, 28902940]

約数ペア:

[(1, 28902940), (2, 14451470), (4, 7225735), (5, 5780588), (10, 2890294), (11, 2627540), (20, 1445147), (22, 1313770), (44, 656885), (55, 525508), (79, 365860), (110, 262754), (158, 182930), (220, 131377), (316, 91465), (395, 73172), (790, 36586), (869, 33260), (1580, 18293), (1663, 17380), (1738, 16630), (3326, 8690), (3476, 8315), (4345, 6652)]