12920996840

素因数分解:

$2^3\times 5^1\times {\mathrm{323024921}}^1$

素因数の和:323024932

約数の個数: 16

約数和(自身を含む): 29072242980

約数和(自身を除く): 16151246140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 323024921, 646049842, 1292099684, 1615124605, 2584199368, 3230249210, 6460498420, 12920996840]

約数ペア:

[(1, 12920996840), (2, 6460498420), (4, 3230249210), (5, 2584199368), (8, 1615124605), (10, 1292099684), (20, 646049842), (40, 323024921)]