12947860880

素因数分解:

$2^4\times 5^1\times {\mathrm{161848261}}^1$

素因数の和:161848274

約数の個数: 20

約数和(自身を含む): 30103776732

約数和(自身を除く): 17155915852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161848261, 323696522, 647393044, 809241305, 1294786088, 1618482610, 2589572176, 3236965220, 6473930440, 12947860880]

約数ペア:

[(1, 12947860880), (2, 6473930440), (4, 3236965220), (5, 2589572176), (8, 1618482610), (10, 1294786088), (16, 809241305), (20, 647393044), (40, 323696522), (80, 161848261)]