209612740

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{677}}^1$

素因数の和:936

約数の個数: 48

約数和(自身を含む): 447984432

約数和(自身を除く): 238371692

約数列:

[1, 2, 4, 5, 10, 20, 113, 137, 226, 274, 452, 548, 565, 677, 685, 1130, 1354, 1370, 2260, 2708, 2740, 3385, 6770, 13540, 15481, 30962, 61924, 76501, 77405, 92749, 153002, 154810, 185498, 306004, 309620, 370996, 382505, 463745, 765010, 927490, 1530020, 1854980, 10480637, 20961274, 41922548, 52403185, 104806370, 209612740]

約数ペア:

[(1, 209612740), (2, 104806370), (4, 52403185), (5, 41922548), (10, 20961274), (20, 10480637), (113, 1854980), (137, 1530020), (226, 927490), (274, 765010), (452, 463745), (548, 382505), (565, 370996), (677, 309620), (685, 306004), (1130, 185498), (1354, 154810), (1370, 153002), (2260, 92749), (2708, 77405), (2740, 76501), (3385, 61924), (6770, 30962), (13540, 15481)]