28913680

素因数分解:

$2^4\times 5^1\times {\mathrm{361421}}^1$

素因数の和:361434

約数の個数: 20

約数和(自身を含む): 67224492

約数和(自身を除く): 38310812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361421, 722842, 1445684, 1807105, 2891368, 3614210, 5782736, 7228420, 14456840, 28913680]

約数ペア:

[(1, 28913680), (2, 14456840), (4, 7228420), (5, 5782736), (8, 3614210), (10, 2891368), (16, 1807105), (20, 1445684), (40, 722842), (80, 361421)]