78864680

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22153}}^1$

素因数の和:22253

約数の個数: 32

約数和(自身を含む): 179447400

約数和(自身を除く): 100582720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 22153, 44306, 88612, 110765, 177224, 221530, 443060, 886120, 1971617, 3943234, 7886468, 9858085, 15772936, 19716170, 39432340, 78864680]

約数ペア:

[(1, 78864680), (2, 39432340), (4, 19716170), (5, 15772936), (8, 9858085), (10, 7886468), (20, 3943234), (40, 1971617), (89, 886120), (178, 443060), (356, 221530), (445, 177224), (712, 110765), (890, 88612), (1780, 44306), (3560, 22153)]