20671760

素因数分解:

$2^4\times 5^1\times {\mathrm{233}}^1\times {\mathrm{1109}}^1$

素因数の和:1355

約数の個数: 40

約数和(自身を含む): 48311640

約数和(自身を除く): 27639880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233, 466, 932, 1109, 1165, 1864, 2218, 2330, 3728, 4436, 4660, 5545, 8872, 9320, 11090, 17744, 18640, 22180, 44360, 88720, 258397, 516794, 1033588, 1291985, 2067176, 2583970, 4134352, 5167940, 10335880, 20671760]

約数ペア:

[(1, 20671760), (2, 10335880), (4, 5167940), (5, 4134352), (8, 2583970), (10, 2067176), (16, 1291985), (20, 1033588), (40, 516794), (80, 258397), (233, 88720), (466, 44360), (932, 22180), (1109, 18640), (1165, 17744), (1864, 11090), (2218, 9320), (2330, 8872), (3728, 5545), (4436, 4660)]