18644440

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1217}}^1$

素因数の和:1611

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 23449640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1217, 1532, 1915, 2434, 3064, 3830, 4868, 6085, 7660, 9736, 12170, 15320, 24340, 48680, 466111, 932222, 1864444, 2330555, 3728888, 4661110, 9322220, 18644440]

約数ペア:

[(1, 18644440), (2, 9322220), (4, 4661110), (5, 3728888), (8, 2330555), (10, 1864444), (20, 932222), (40, 466111), (383, 48680), (766, 24340), (1217, 15320), (1532, 12170), (1915, 9736), (2434, 7660), (3064, 6085), (3830, 4868)]