28920760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65729}}^1$

素因数の和:65751

約数の個数: 32

約数和(自身を含む): 70988400

約数和(自身を除く): 42067640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65729, 131458, 262916, 328645, 525832, 657290, 723019, 1314580, 1446038, 2629160, 2892076, 3615095, 5784152, 7230190, 14460380, 28920760]

約数ペア:

[(1, 28920760), (2, 14460380), (4, 7230190), (5, 5784152), (8, 3615095), (10, 2892076), (11, 2629160), (20, 1446038), (22, 1314580), (40, 723019), (44, 657290), (55, 525832), (88, 328645), (110, 262916), (220, 131458), (440, 65729)]