21519872

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{3821}}^1$

素因数の和:3850

約数の個数: 40

約数和(自身を含む): 46918872

約数和(自身を除く): 25399000

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 512, 704, 1408, 2816, 3821, 5632, 7642, 15284, 30568, 42031, 61136, 84062, 122272, 168124, 244544, 336248, 489088, 672496, 978176, 1344992, 1956352, 2689984, 5379968, 10759936, 21519872]

約数ペア:

[(1, 21519872), (2, 10759936), (4, 5379968), (8, 2689984), (11, 1956352), (16, 1344992), (22, 978176), (32, 672496), (44, 489088), (64, 336248), (88, 244544), (128, 168124), (176, 122272), (256, 84062), (352, 61136), (512, 42031), (704, 30568), (1408, 15284), (2816, 7642), (3821, 5632)]