18842985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1459}}^1$

素因数の和:1518

約数の個数: 48

約数和(自身を含む): 38263680

約数和(自身を除く): 19420695

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 205, 287, 315, 369, 615, 861, 1435, 1459, 1845, 2583, 4305, 4377, 7295, 10213, 12915, 13131, 21885, 30639, 51065, 59819, 65655, 91917, 153195, 179457, 299095, 418733, 459585, 538371, 897285, 1256199, 2093665, 2691855, 3768597, 6280995, 18842985]

約数ペア:

[(1, 18842985), (3, 6280995), (5, 3768597), (7, 2691855), (9, 2093665), (15, 1256199), (21, 897285), (35, 538371), (41, 459585), (45, 418733), (63, 299095), (105, 179457), (123, 153195), (205, 91917), (287, 65655), (315, 59819), (369, 51065), (615, 30639), (861, 21885), (1435, 13131), (1459, 12915), (1845, 10213), (2583, 7295), (4305, 4377)]