21992790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8237}}^1$

素因数の和:8336

約数の個数: 32

約数和(自身を含む): 53382240

約数和(自身を除く): 31389450

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 89, 178, 267, 445, 534, 890, 1335, 2670, 8237, 16474, 24711, 41185, 49422, 82370, 123555, 247110, 733093, 1466186, 2199279, 3665465, 4398558, 7330930, 10996395, 21992790]

約数ペア:

[(1, 21992790), (2, 10996395), (3, 7330930), (5, 4398558), (6, 3665465), (10, 2199279), (15, 1466186), (30, 733093), (89, 247110), (178, 123555), (267, 82370), (445, 49422), (534, 41185), (890, 24711), (1335, 16474), (2670, 8237)]