20211268

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 44448768

約数和(自身を除く): 24237500

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 211, 308, 311, 422, 622, 844, 1244, 1477, 2177, 2321, 2954, 3421, 4354, 4642, 5908, 6842, 8708, 9284, 13684, 16247, 23947, 32494, 47894, 64988, 65621, 95788, 131242, 262484, 459347, 721831, 918694, 1443662, 1837388, 2887324, 5052817, 10105634, 20211268]

約数ペア:

[(1, 20211268), (2, 10105634), (4, 5052817), (7, 2887324), (11, 1837388), (14, 1443662), (22, 918694), (28, 721831), (44, 459347), (77, 262484), (154, 131242), (211, 95788), (308, 65621), (311, 64988), (422, 47894), (622, 32494), (844, 23947), (1244, 16247), (1477, 13684), (2177, 9284), (2321, 8708), (2954, 6842), (3421, 5908), (4354, 4642)]