20215472

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 41247360

約数和(自身を除く): 21031888

約数列:

[1, 2, 4, 8, 16, 31, 53, 62, 106, 124, 212, 248, 424, 496, 769, 848, 1538, 1643, 3076, 3286, 6152, 6572, 12304, 13144, 23839, 26288, 40757, 47678, 81514, 95356, 163028, 190712, 326056, 381424, 652112, 1263467, 2526934, 5053868, 10107736, 20215472]

約数ペア:

[(1, 20215472), (2, 10107736), (4, 5053868), (8, 2526934), (16, 1263467), (31, 652112), (53, 381424), (62, 326056), (106, 190712), (124, 163028), (212, 95356), (248, 81514), (424, 47678), (496, 40757), (769, 26288), (848, 23839), (1538, 13144), (1643, 12304), (3076, 6572), (3286, 6152)]