21318328

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1283}}^1$

素因数の和:1387

約数の個数: 32

約数和(自身を含む): 41909760

約数和(自身を除く): 20591432

約数列:

[1, 2, 4, 8, 31, 62, 67, 124, 134, 248, 268, 536, 1283, 2077, 2566, 4154, 5132, 8308, 10264, 16616, 39773, 79546, 85961, 159092, 171922, 318184, 343844, 687688, 2664791, 5329582, 10659164, 21318328]

約数ペア:

[(1, 21318328), (2, 10659164), (4, 5329582), (8, 2664791), (31, 687688), (62, 343844), (67, 318184), (124, 171922), (134, 159092), (248, 85961), (268, 79546), (536, 39773), (1283, 16616), (2077, 10264), (2566, 8308), (4154, 5132)]