18106420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 21520076

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 284, 311, 355, 410, 622, 710, 820, 1244, 1420, 1555, 2911, 3110, 5822, 6220, 11644, 12751, 14555, 22081, 25502, 29110, 44162, 51004, 58220, 63755, 88324, 110405, 127510, 220810, 255020, 441620, 905321, 1810642, 3621284, 4526605, 9053210, 18106420]

約数ペア:

[(1, 18106420), (2, 9053210), (4, 4526605), (5, 3621284), (10, 1810642), (20, 905321), (41, 441620), (71, 255020), (82, 220810), (142, 127510), (164, 110405), (205, 88324), (284, 63755), (311, 58220), (355, 51004), (410, 44162), (622, 29110), (710, 25502), (820, 22081), (1244, 14555), (1420, 12751), (1555, 11644), (2911, 6220), (3110, 5822)]