18892780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{307}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 42378336

約数和(自身を除く): 23485556

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 181, 307, 340, 362, 614, 724, 905, 1228, 1535, 1810, 3070, 3077, 3620, 5219, 6140, 6154, 10438, 12308, 15385, 20876, 26095, 30770, 52190, 55567, 61540, 104380, 111134, 222268, 277835, 555670, 944639, 1111340, 1889278, 3778556, 4723195, 9446390, 18892780]

約数ペア:

[(1, 18892780), (2, 9446390), (4, 4723195), (5, 3778556), (10, 1889278), (17, 1111340), (20, 944639), (34, 555670), (68, 277835), (85, 222268), (170, 111134), (181, 104380), (307, 61540), (340, 55567), (362, 52190), (614, 30770), (724, 26095), (905, 20876), (1228, 15385), (1535, 12308), (1810, 10438), (3070, 6154), (3077, 6140), (3620, 5219)]