78561290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{4441}}^1$

素因数の和:4538

約数の個数: 32

約数和(自身を含む): 148718160

約数和(自身を除く): 70156870

約数列:

[1, 2, 5, 10, 29, 58, 61, 122, 145, 290, 305, 610, 1769, 3538, 4441, 8845, 8882, 17690, 22205, 44410, 128789, 257578, 270901, 541802, 643945, 1287890, 1354505, 2709010, 7856129, 15712258, 39280645, 78561290]

約数ペア:

[(1, 78561290), (2, 39280645), (5, 15712258), (10, 7856129), (29, 2709010), (58, 1354505), (61, 1287890), (122, 643945), (145, 541802), (290, 270901), (305, 257578), (610, 128789), (1769, 44410), (3538, 22205), (4441, 17690), (8845, 8882)]