21045590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2341}}^1$

素因数の和:2408

約数の個数: 32

約数和(自身を含む): 40469760

約数和(自身を除く): 19424170

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 145, 155, 290, 310, 899, 1798, 2341, 4495, 4682, 8990, 11705, 23410, 67889, 72571, 135778, 145142, 339445, 362855, 678890, 725710, 2104559, 4209118, 10522795, 21045590]

約数ペア:

[(1, 21045590), (2, 10522795), (5, 4209118), (10, 2104559), (29, 725710), (31, 678890), (58, 362855), (62, 339445), (145, 145142), (155, 135778), (290, 72571), (310, 67889), (899, 23410), (1798, 11705), (2341, 8990), (4495, 4682)]