21729736

素因数分解:

$2^3\times 7^3\times {\mathrm{7919}}^1$

素因数の和:7946

約数の個数: 32

約数和(自身を含む): 47520000

約数和(自身を除く): 25790264

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7919, 15838, 31676, 55433, 63352, 110866, 221732, 388031, 443464, 776062, 1552124, 2716217, 3104248, 5432434, 10864868, 21729736]

約数ペア:

[(1, 21729736), (2, 10864868), (4, 5432434), (7, 3104248), (8, 2716217), (14, 1552124), (28, 776062), (49, 443464), (56, 388031), (98, 221732), (196, 110866), (343, 63352), (392, 55433), (686, 31676), (1372, 15838), (2744, 7919)]