12958640

素因数分解:

$2^4\times 5^1\times {\mathrm{161983}}^1$

素因数の和:161996

約数の個数: 20

約数和(自身を含む): 30129024

約数和(自身を除く): 17170384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161983, 323966, 647932, 809915, 1295864, 1619830, 2591728, 3239660, 6479320, 12958640]

約数ペア:

[(1, 12958640), (2, 6479320), (4, 3239660), (5, 2591728), (8, 1619830), (10, 1295864), (16, 809915), (20, 647932), (40, 323966), (80, 161983)]