21241432

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{499}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 42390000

約数和(自身を除く): 21148568

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 313, 499, 626, 998, 1252, 1996, 2504, 3992, 5321, 8483, 10642, 16966, 21284, 33932, 42568, 67864, 156187, 312374, 624748, 1249496, 2655179, 5310358, 10620716, 21241432]

約数ペア:

[(1, 21241432), (2, 10620716), (4, 5310358), (8, 2655179), (17, 1249496), (34, 624748), (68, 312374), (136, 156187), (313, 67864), (499, 42568), (626, 33932), (998, 21284), (1252, 16966), (1996, 10642), (2504, 8483), (3992, 5321)]