201604720

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{4951}}^1$

素因数の和:5473

約数の個数: 40

約数和(自身を含む): 469746720

約数和(自身を除く): 268142000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2545, 4072, 4951, 5090, 8144, 9902, 10180, 19804, 20360, 24755, 39608, 40720, 49510, 79216, 99020, 198040, 396080, 2520059, 5040118, 10080236, 12600295, 20160472, 25200590, 40320944, 50401180, 100802360, 201604720]

約数ペア:

[(1, 201604720), (2, 100802360), (4, 50401180), (5, 40320944), (8, 25200590), (10, 20160472), (16, 12600295), (20, 10080236), (40, 5040118), (80, 2520059), (509, 396080), (1018, 198040), (2036, 99020), (2545, 79216), (4072, 49510), (4951, 40720), (5090, 39608), (8144, 24755), (9902, 20360), (10180, 19804)]