21171910

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{929}}^1$

素因数の和:1032

約数の個数: 32

約数和(自身を含む): 39774240

約数和(自身を除く): 18602330

約数列:

[1, 2, 5, 10, 43, 53, 86, 106, 215, 265, 430, 530, 929, 1858, 2279, 4558, 4645, 9290, 11395, 22790, 39947, 49237, 79894, 98474, 199735, 246185, 399470, 492370, 2117191, 4234382, 10585955, 21171910]

約数ペア:

[(1, 21171910), (2, 10585955), (5, 4234382), (10, 2117191), (43, 492370), (53, 399470), (86, 246185), (106, 199735), (215, 98474), (265, 79894), (430, 49237), (530, 39947), (929, 22790), (1858, 11395), (2279, 9290), (4558, 4645)]