165384280

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{8123}}^1$

素因数の和:8643

約数の個数: 32

約数和(自身を含む): 372891600

約数和(自身を除く): 207507320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 8123, 10180, 16246, 20360, 32492, 40615, 64984, 81230, 162460, 324920, 4134607, 8269214, 16538428, 20673035, 33076856, 41346070, 82692140, 165384280]

約数ペア:

[(1, 165384280), (2, 82692140), (4, 41346070), (5, 33076856), (8, 20673035), (10, 16538428), (20, 8269214), (40, 4134607), (509, 324920), (1018, 162460), (2036, 81230), (2545, 64984), (4072, 40615), (5090, 32492), (8123, 20360), (10180, 16246)]