19942390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{857}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 38918880

約数和(自身を除く): 18976490

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 857, 895, 1714, 1790, 2327, 4285, 4654, 8570, 11141, 11635, 22282, 23270, 55705, 111410, 153403, 306806, 767015, 1534030, 1994239, 3988478, 9971195, 19942390]

約数ペア:

[(1, 19942390), (2, 9971195), (5, 3988478), (10, 1994239), (13, 1534030), (26, 767015), (65, 306806), (130, 153403), (179, 111410), (358, 55705), (857, 23270), (895, 22282), (1714, 11635), (1790, 11141), (2327, 8570), (4285, 4654)]