21491830

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 39967488

約数和(自身を除く): 18475658

約数列:

[1, 2, 5, 10, 43, 86, 151, 215, 302, 331, 430, 662, 755, 1510, 1655, 3310, 6493, 12986, 14233, 28466, 32465, 49981, 64930, 71165, 99962, 142330, 249905, 499810, 2149183, 4298366, 10745915, 21491830]

約数ペア:

[(1, 21491830), (2, 10745915), (5, 4298366), (10, 2149183), (43, 499810), (86, 249905), (151, 142330), (215, 99962), (302, 71165), (331, 64930), (430, 49981), (662, 32465), (755, 28466), (1510, 14233), (1655, 12986), (3310, 6493)]