28285420

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5503}}^1$

素因数の和:5769

約数の個数: 24

約数和(自身を含む): 59641344

約数和(自身を除く): 31355924

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 5503, 11006, 22012, 27515, 55030, 110060, 1414271, 2828542, 5657084, 7071355, 14142710, 28285420]

約数ペア:

[(1, 28285420), (2, 14142710), (4, 7071355), (5, 5657084), (10, 2828542), (20, 1414271), (257, 110060), (514, 55030), (1028, 27515), (1285, 22012), (2570, 11006), (5140, 5503)]