20961760

素因数分解:

$2^5\times 5^1\times {\mathrm{131011}}^1$

素因数の和:131026

約数の個数: 24

約数和(自身を含む): 49522536

約数和(自身を除く): 28560776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131011, 262022, 524044, 655055, 1048088, 1310110, 2096176, 2620220, 4192352, 5240440, 10480880, 20961760]

約数ペア:

[(1, 20961760), (2, 10480880), (4, 5240440), (5, 4192352), (8, 2620220), (10, 2096176), (16, 1310110), (20, 1048088), (32, 655055), (40, 524044), (80, 262022), (160, 131011)]