18789890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{6547}}^1$

素因数の和:6602

約数の個数: 32

約数和(自身を含む): 39602304

約数和(自身を除く): 20812414

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 82, 205, 287, 410, 574, 1435, 2870, 6547, 13094, 32735, 45829, 65470, 91658, 229145, 268427, 458290, 536854, 1342135, 1878989, 2684270, 3757978, 9394945, 18789890]

約数ペア:

[(1, 18789890), (2, 9394945), (5, 3757978), (7, 2684270), (10, 1878989), (14, 1342135), (35, 536854), (41, 458290), (70, 268427), (82, 229145), (205, 91658), (287, 65470), (410, 45829), (574, 32735), (1435, 13094), (2870, 6547)]