78290120

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4019}}^1$

素因数の和:4517

約数の個数: 32

約数和(自身を含む): 176558400

約数和(自身を除く): 98268280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4019, 4870, 8038, 9740, 16076, 19480, 20095, 32152, 40190, 80380, 160760, 1957253, 3914506, 7829012, 9786265, 15658024, 19572530, 39145060, 78290120]

約数ペア:

[(1, 78290120), (2, 39145060), (4, 19572530), (5, 15658024), (8, 9786265), (10, 7829012), (20, 3914506), (40, 1957253), (487, 160760), (974, 80380), (1948, 40190), (2435, 32152), (3896, 20095), (4019, 19480), (4870, 16076), (8038, 9740)]