81431660

素因数分解:

$2^2\times 5^1\times {\mathrm{617}}^1\times {\mathrm{6599}}^1$

素因数の和:7225

約数の個数: 24

約数和(自身を含む): 171309600

約数和(自身を除く): 89877940

約数列:

[1, 2, 4, 5, 10, 20, 617, 1234, 2468, 3085, 6170, 6599, 12340, 13198, 26396, 32995, 65990, 131980, 4071583, 8143166, 16286332, 20357915, 40715830, 81431660]

約数ペア:

[(1, 81431660), (2, 40715830), (4, 20357915), (5, 16286332), (10, 8143166), (20, 4071583), (617, 131980), (1234, 65990), (2468, 32995), (3085, 26396), (6170, 13198), (6599, 12340)]