28193980

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{4447}}^1$

素因数の和:4773

約数の個数: 24

約数和(自身を含む): 59407488

約数和(自身を除く): 31213508

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3170, 4447, 6340, 8894, 17788, 22235, 44470, 88940, 1409699, 2819398, 5638796, 7048495, 14096990, 28193980]

約数ペア:

[(1, 28193980), (2, 14096990), (4, 7048495), (5, 5638796), (10, 2819398), (20, 1409699), (317, 88940), (634, 44470), (1268, 22235), (1585, 17788), (3170, 8894), (4447, 6340)]