21396016

素因数分解:

$2^4\times {\mathrm{673}}^1\times {\mathrm{1987}}^1$

素因数の和:2668

約数の個数: 20

約数和(自身を含む): 41537272

約数和(自身を除く): 20141256

約数列:

[1, 2, 4, 8, 16, 673, 1346, 1987, 2692, 3974, 5384, 7948, 10768, 15896, 31792, 1337251, 2674502, 5349004, 10698008, 21396016]

約数ペア:

[(1, 21396016), (2, 10698008), (4, 5349004), (8, 2674502), (16, 1337251), (673, 31792), (1346, 15896), (1987, 10768), (2692, 7948), (3974, 5384)]