18662620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{971}}^1$

素因数の和:1042

約数の個数: 36

約数和(自身を含む): 40538232

約数和(自身を除く): 21875612

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 971, 1922, 1942, 3844, 3884, 4805, 4855, 9610, 9710, 19220, 19420, 30101, 60202, 120404, 150505, 301010, 602020, 933131, 1866262, 3732524, 4665655, 9331310, 18662620]

約数ペア:

[(1, 18662620), (2, 9331310), (4, 4665655), (5, 3732524), (10, 1866262), (20, 933131), (31, 602020), (62, 301010), (124, 150505), (155, 120404), (310, 60202), (620, 30101), (961, 19420), (971, 19220), (1922, 9710), (1942, 9610), (3844, 4855), (3884, 4805)]