18729160

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5261}}^1$

素因数の和:5361

約数の個数: 32

約数和(自身を含む): 42622200

約数和(自身を除く): 23893040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5261, 10522, 21044, 26305, 42088, 52610, 105220, 210440, 468229, 936458, 1872916, 2341145, 3745832, 4682290, 9364580, 18729160]

約数ペア:

[(1, 18729160), (2, 9364580), (4, 4682290), (5, 3745832), (8, 2341145), (10, 1872916), (20, 936458), (40, 468229), (89, 210440), (178, 105220), (356, 52610), (445, 42088), (712, 26305), (890, 21044), (1780, 10522), (3560, 5261)]