17981985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4177}}^1$

素因数の和:4233

約数の個数: 32

約数和(自身を含む): 33691392

約数和(自身を除く): 15709407

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4177, 4305, 12531, 20885, 29239, 62655, 87717, 146195, 171257, 438585, 513771, 856285, 1198799, 2568855, 3596397, 5993995, 17981985]

約数ペア:

[(1, 17981985), (3, 5993995), (5, 3596397), (7, 2568855), (15, 1198799), (21, 856285), (35, 513771), (41, 438585), (105, 171257), (123, 146195), (205, 87717), (287, 62655), (615, 29239), (861, 20885), (1435, 12531), (4177, 4305)]