72778040

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4583}}^1$

素因数の和:4991

約数の個数: 32

約数和(自身を含む): 164198880

約数和(自身を除く): 91420840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 4583, 7940, 9166, 15880, 18332, 22915, 36664, 45830, 91660, 183320, 1819451, 3638902, 7277804, 9097255, 14555608, 18194510, 36389020, 72778040]

約数ペア:

[(1, 72778040), (2, 36389020), (4, 18194510), (5, 14555608), (8, 9097255), (10, 7277804), (20, 3638902), (40, 1819451), (397, 183320), (794, 91660), (1588, 45830), (1985, 36664), (3176, 22915), (3970, 18332), (4583, 15880), (7940, 9166)]