20067440

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3533}}^1$

素因数の和:3617

約数の個数: 40

約数和(自身を含む): 47327328

約数和(自身を除く): 27259888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3533, 5680, 7066, 14132, 17665, 28264, 35330, 56528, 70660, 141320, 250843, 282640, 501686, 1003372, 1254215, 2006744, 2508430, 4013488, 5016860, 10033720, 20067440]

約数ペア:

[(1, 20067440), (2, 10033720), (4, 5016860), (5, 4013488), (8, 2508430), (10, 2006744), (16, 1254215), (20, 1003372), (40, 501686), (71, 282640), (80, 250843), (142, 141320), (284, 70660), (355, 56528), (568, 35330), (710, 28264), (1136, 17665), (1420, 14132), (2840, 7066), (3533, 5680)]