1648220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 4041408

約数和(自身を除く): 2393188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 193, 244, 305, 386, 427, 610, 772, 854, 965, 1220, 1351, 1708, 1930, 2135, 2702, 3860, 4270, 5404, 6755, 8540, 11773, 13510, 23546, 27020, 47092, 58865, 82411, 117730, 164822, 235460, 329644, 412055, 824110, 1648220]

約数ペア:

[(1, 1648220), (2, 824110), (4, 412055), (5, 329644), (7, 235460), (10, 164822), (14, 117730), (20, 82411), (28, 58865), (35, 47092), (61, 27020), (70, 23546), (122, 13510), (140, 11773), (193, 8540), (244, 6755), (305, 5404), (386, 4270), (427, 3860), (610, 2702), (772, 2135), (854, 1930), (965, 1708), (1220, 1351)]