21287024

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1531}}^1$

素因数の和:1629

約数の個数: 40

約数和(自身を含む): 45592320

約数和(自身を除く): 24305296

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 79, 88, 158, 176, 316, 632, 869, 1264, 1531, 1738, 3062, 3476, 6124, 6952, 12248, 13904, 16841, 24496, 33682, 67364, 120949, 134728, 241898, 269456, 483796, 967592, 1330439, 1935184, 2660878, 5321756, 10643512, 21287024]

約数ペア:

[(1, 21287024), (2, 10643512), (4, 5321756), (8, 2660878), (11, 1935184), (16, 1330439), (22, 967592), (44, 483796), (79, 269456), (88, 241898), (158, 134728), (176, 120949), (316, 67364), (632, 33682), (869, 24496), (1264, 16841), (1531, 13904), (1738, 12248), (3062, 6952), (3476, 6124)]