79806640

素因数分解:

$2^4\times 5^1\times {\mathrm{997583}}^1$

素因数の和:997596

約数の個数: 20

約数和(自身を含む): 185550624

約数和(自身を除く): 105743984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997583, 1995166, 3990332, 4987915, 7980664, 9975830, 15961328, 19951660, 39903320, 79806640]

約数ペア:

[(1, 79806640), (2, 39903320), (4, 19951660), (5, 15961328), (8, 9975830), (10, 7980664), (16, 4987915), (20, 3990332), (40, 1995166), (80, 997583)]