18740908

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{863}}^1$

素因数の和:1017

約数の個数: 24

約数和(自身を含む): 33747840

約数和(自身を除く): 15006932

約数列:

[1, 2, 4, 61, 89, 122, 178, 244, 356, 863, 1726, 3452, 5429, 10858, 21716, 52643, 76807, 105286, 153614, 210572, 307228, 4685227, 9370454, 18740908]

約数ペア:

[(1, 18740908), (2, 9370454), (4, 4685227), (61, 307228), (89, 210572), (122, 153614), (178, 105286), (244, 76807), (356, 52643), (863, 21716), (1726, 10858), (3452, 5429)]