12976720

素因数分解:

$2^4\times 5^1\times {\mathrm{162209}}^1$

素因数の和:162222

約数の個数: 20

約数和(自身を含む): 30171060

約数和(自身を除く): 17194340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 162209, 324418, 648836, 811045, 1297672, 1622090, 2595344, 3244180, 6488360, 12976720]

約数ペア:

[(1, 12976720), (2, 6488360), (4, 3244180), (5, 2595344), (8, 1622090), (10, 1297672), (16, 811045), (20, 648836), (40, 324418), (80, 162209)]