28418480

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3259}}^1$

素因数の和:3381

約数の個数: 40

約数和(自身を含む): 66699600

約数和(自身を除く): 38281120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3259, 4360, 6518, 8720, 13036, 16295, 26072, 32590, 52144, 65180, 130360, 260720, 355231, 710462, 1420924, 1776155, 2841848, 3552310, 5683696, 7104620, 14209240, 28418480]

約数ペア:

[(1, 28418480), (2, 14209240), (4, 7104620), (5, 5683696), (8, 3552310), (10, 2841848), (16, 1776155), (20, 1420924), (40, 710462), (80, 355231), (109, 260720), (218, 130360), (436, 65180), (545, 52144), (872, 32590), (1090, 26072), (1744, 16295), (2180, 13036), (3259, 8720), (4360, 6518)]