18408940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7607}}^1$

素因数の和:7638

約数の個数: 36

約数和(自身を含む): 42498288

約数和(自身を除く): 24089348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7607, 15214, 30428, 38035, 76070, 83677, 152140, 167354, 334708, 418385, 836770, 920447, 1673540, 1840894, 3681788, 4602235, 9204470, 18408940]

約数ペア:

[(1, 18408940), (2, 9204470), (4, 4602235), (5, 3681788), (10, 1840894), (11, 1673540), (20, 920447), (22, 836770), (44, 418385), (55, 334708), (110, 167354), (121, 152140), (220, 83677), (242, 76070), (484, 38035), (605, 30428), (1210, 15214), (2420, 7607)]