78900680

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7121}}^1$

素因数の和:7409

約数の個数: 32

約数和(自身を含む): 178192440

約数和(自身を除く): 99291760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 7121, 11080, 14242, 28484, 35605, 56968, 71210, 142420, 284840, 1972517, 3945034, 7890068, 9862585, 15780136, 19725170, 39450340, 78900680]

約数ペア:

[(1, 78900680), (2, 39450340), (4, 19725170), (5, 15780136), (8, 9862585), (10, 7890068), (20, 3945034), (40, 1972517), (277, 284840), (554, 142420), (1108, 71210), (1385, 56968), (2216, 35605), (2770, 28484), (5540, 14242), (7121, 11080)]