18671720

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{809}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 42136200

約数和(自身を除く): 23464480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 809, 1154, 1618, 2308, 2885, 3236, 4045, 4616, 5770, 6472, 8090, 11540, 16180, 23080, 32360, 466793, 933586, 1867172, 2333965, 3734344, 4667930, 9335860, 18671720]

約数ペア:

[(1, 18671720), (2, 9335860), (4, 4667930), (5, 3734344), (8, 2333965), (10, 1867172), (20, 933586), (40, 466793), (577, 32360), (809, 23080), (1154, 16180), (1618, 11540), (2308, 8090), (2885, 6472), (3236, 5770), (4045, 4616)]