18333609

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 29061120

約数和(自身を除く): 10727511

約数列:

[1, 3, 7, 21, 43, 79, 129, 237, 257, 301, 553, 771, 903, 1659, 1799, 3397, 5397, 10191, 11051, 20303, 23779, 33153, 60909, 71337, 77357, 142121, 232071, 426363, 873029, 2619087, 6111203, 18333609]

約数ペア:

[(1, 18333609), (3, 6111203), (7, 2619087), (21, 873029), (43, 426363), (79, 232071), (129, 142121), (237, 77357), (257, 71337), (301, 60909), (553, 33153), (771, 23779), (903, 20303), (1659, 11051), (1799, 10191), (3397, 5397)]