12689680

素因数分解:

$2^4\times 5^1\times {\mathrm{158621}}^1$

素因数の和:158634

約数の個数: 20

約数和(自身を含む): 29503692

約数和(自身を除く): 16814012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 158621, 317242, 634484, 793105, 1268968, 1586210, 2537936, 3172420, 6344840, 12689680]

約数ペア:

[(1, 12689680), (2, 6344840), (4, 3172420), (5, 2537936), (8, 1586210), (10, 1268968), (16, 793105), (20, 634484), (40, 317242), (80, 158621)]