20593904

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:897

約数の個数: 40

約数和(自身を含む): 41983920

約数和(自身を除く): 21390016

約数列:

[1, 2, 4, 8, 16, 37, 43, 74, 86, 148, 172, 296, 344, 592, 688, 809, 1591, 1618, 3182, 3236, 6364, 6472, 12728, 12944, 25456, 29933, 34787, 59866, 69574, 119732, 139148, 239464, 278296, 478928, 556592, 1287119, 2574238, 5148476, 10296952, 20593904]

約数ペア:

[(1, 20593904), (2, 10296952), (4, 5148476), (8, 2574238), (16, 1287119), (37, 556592), (43, 478928), (74, 278296), (86, 239464), (148, 139148), (172, 119732), (296, 69574), (344, 59866), (592, 34787), (688, 29933), (809, 25456), (1591, 12944), (1618, 12728), (3182, 6472), (3236, 6364)]