258940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1$

素因数の和:138

約数の個数: 36

約数和(自身を含む): 603288

約数和(自身を除く): 344348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 107, 110, 121, 214, 220, 242, 428, 484, 535, 605, 1070, 1177, 1210, 2140, 2354, 2420, 4708, 5885, 11770, 12947, 23540, 25894, 51788, 64735, 129470, 258940]

約数ペア:

[(1, 258940), (2, 129470), (4, 64735), (5, 51788), (10, 25894), (11, 23540), (20, 12947), (22, 11770), (44, 5885), (55, 4708), (107, 2420), (110, 2354), (121, 2140), (214, 1210), (220, 1177), (242, 1070), (428, 605), (484, 535)]