20835440

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7039}}^1$

素因数の和:7089

約数の個数: 40

約数和(自身を含む): 49758720

約数和(自身を除く): 28923280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7039, 14078, 28156, 35195, 56312, 70390, 112624, 140780, 260443, 281560, 520886, 563120, 1041772, 1302215, 2083544, 2604430, 4167088, 5208860, 10417720, 20835440]

約数ペア:

[(1, 20835440), (2, 10417720), (4, 5208860), (5, 4167088), (8, 2604430), (10, 2083544), (16, 1302215), (20, 1041772), (37, 563120), (40, 520886), (74, 281560), (80, 260443), (148, 140780), (185, 112624), (296, 70390), (370, 56312), (592, 35195), (740, 28156), (1480, 14078), (2960, 7039)]