21691456

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19937}}^1$

素因数の和:19966

約数の個数: 28

約数和(自身を含む): 45578268

約数和(自身を除く): 23886812

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 136, 272, 544, 1088, 19937, 39874, 79748, 159496, 318992, 338929, 637984, 677858, 1275968, 1355716, 2711432, 5422864, 10845728, 21691456]

約数ペア:

[(1, 21691456), (2, 10845728), (4, 5422864), (8, 2711432), (16, 1355716), (17, 1275968), (32, 677858), (34, 637984), (64, 338929), (68, 318992), (136, 159496), (272, 79748), (544, 39874), (1088, 19937)]