21787472

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11443}}^1$

素因数の和:11475

約数の個数: 40

約数和(自身を含む): 51086016

約数和(自身を除く): 29298544

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 11443, 22886, 45772, 80101, 91544, 160202, 183088, 194531, 320404, 389062, 640808, 778124, 1281616, 1361717, 1556248, 2723434, 3112496, 5446868, 10893736, 21787472]

約数ペア:

[(1, 21787472), (2, 10893736), (4, 5446868), (7, 3112496), (8, 2723434), (14, 1556248), (16, 1361717), (17, 1281616), (28, 778124), (34, 640808), (56, 389062), (68, 320404), (112, 194531), (119, 183088), (136, 160202), (238, 91544), (272, 80101), (476, 45772), (952, 22886), (1904, 11443)]