20697690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:823

約数の個数: 64

約数和(自身を含む): 54302976

約数和(自身を除く): 33605286

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 73, 78, 130, 146, 195, 219, 365, 390, 438, 727, 730, 949, 1095, 1454, 1898, 2181, 2190, 2847, 3635, 4362, 4745, 5694, 7270, 9451, 9490, 10905, 14235, 18902, 21810, 28353, 28470, 47255, 53071, 56706, 94510, 106142, 141765, 159213, 265355, 283530, 318426, 530710, 689923, 796065, 1379846, 1592130, 2069769, 3449615, 4139538, 6899230, 10348845, 20697690]

約数ペア:

[(1, 20697690), (2, 10348845), (3, 6899230), (5, 4139538), (6, 3449615), (10, 2069769), (13, 1592130), (15, 1379846), (26, 796065), (30, 689923), (39, 530710), (65, 318426), (73, 283530), (78, 265355), (130, 159213), (146, 141765), (195, 106142), (219, 94510), (365, 56706), (390, 53071), (438, 47255), (727, 28470), (730, 28353), (949, 21810), (1095, 18902), (1454, 14235), (1898, 10905), (2181, 9490), (2190, 9451), (2847, 7270), (3635, 5694), (4362, 4745)]