20722864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1621}}^1$

素因数の和:1693

約数の個数: 40

約数和(自身を含む): 43443648

約数和(自身を除く): 22720784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1598, 1621, 3196, 3242, 6392, 6484, 12784, 12968, 25936, 27557, 55114, 76187, 110228, 152374, 220456, 304748, 440912, 609496, 1218992, 1295179, 2590358, 5180716, 10361432, 20722864]

約数ペア:

[(1, 20722864), (2, 10361432), (4, 5180716), (8, 2590358), (16, 1295179), (17, 1218992), (34, 609496), (47, 440912), (68, 304748), (94, 220456), (136, 152374), (188, 110228), (272, 76187), (376, 55114), (752, 27557), (799, 25936), (1598, 12968), (1621, 12784), (3196, 6484), (3242, 6392)]