78709780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{4817}}^1$

素因数の和:4888

約数の個数: 48

約数和(自身を含む): 178073280

約数和(自身を除く): 99363500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 4085, 4817, 8170, 9634, 16340, 19268, 24085, 48170, 91523, 96340, 183046, 207131, 366092, 414262, 457615, 828524, 915230, 1035655, 1830460, 2071310, 3935489, 4142620, 7870978, 15741956, 19677445, 39354890, 78709780]

約数ペア:

[(1, 78709780), (2, 39354890), (4, 19677445), (5, 15741956), (10, 7870978), (19, 4142620), (20, 3935489), (38, 2071310), (43, 1830460), (76, 1035655), (86, 915230), (95, 828524), (172, 457615), (190, 414262), (215, 366092), (380, 207131), (430, 183046), (817, 96340), (860, 91523), (1634, 48170), (3268, 24085), (4085, 19268), (4817, 16340), (8170, 9634)]