21124684

素因数分解:

$2^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 43848000

約数和(自身を除く): 22723316

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 173, 178, 196, 343, 346, 356, 623, 686, 692, 1211, 1246, 1372, 2422, 2492, 4361, 4844, 8477, 8722, 15397, 16954, 17444, 30527, 30794, 33908, 59339, 61054, 61588, 107779, 118678, 122108, 215558, 237356, 431116, 754453, 1508906, 3017812, 5281171, 10562342, 21124684]

約数ペア:

[(1, 21124684), (2, 10562342), (4, 5281171), (7, 3017812), (14, 1508906), (28, 754453), (49, 431116), (89, 237356), (98, 215558), (173, 122108), (178, 118678), (196, 107779), (343, 61588), (346, 61054), (356, 59339), (623, 33908), (686, 30794), (692, 30527), (1211, 17444), (1246, 16954), (1372, 15397), (2422, 8722), (2492, 8477), (4361, 4844)]