1306820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{181}}^1$

素因数の和:228

約数の個数: 36

約数和(自身を含む): 2912364

約数和(自身を除く): 1605544

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 361, 362, 380, 722, 724, 905, 1444, 1805, 1810, 3439, 3610, 3620, 6878, 7220, 13756, 17195, 34390, 65341, 68780, 130682, 261364, 326705, 653410, 1306820]

約数ペア:

[(1, 1306820), (2, 653410), (4, 326705), (5, 261364), (10, 130682), (19, 68780), (20, 65341), (38, 34390), (76, 17195), (95, 13756), (181, 7220), (190, 6878), (361, 3620), (362, 3610), (380, 3439), (722, 1810), (724, 1805), (905, 1444)]