19968519520

素因数分解:

$2^5\times 5^1\times {\mathrm{787}}^1\times {\mathrm{158581}}^1$

素因数の和:159383

約数の個数: 48

約数和(自身を含む): 47235868848

約数和(自身を除く): 27267349328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 787, 1574, 3148, 3935, 6296, 7870, 12592, 15740, 25184, 31480, 62960, 125920, 158581, 317162, 634324, 792905, 1268648, 1585810, 2537296, 3171620, 5074592, 6343240, 12686480, 25372960, 124803247, 249606494, 499212988, 624016235, 998425976, 1248032470, 1996851952, 2496064940, 3993703904, 4992129880, 9984259760, 19968519520]

約数ペア:

[(1, 19968519520), (2, 9984259760), (4, 4992129880), (5, 3993703904), (8, 2496064940), (10, 1996851952), (16, 1248032470), (20, 998425976), (32, 624016235), (40, 499212988), (80, 249606494), (160, 124803247), (787, 25372960), (1574, 12686480), (3148, 6343240), (3935, 5074592), (6296, 3171620), (7870, 2537296), (12592, 1585810), (15740, 1268648), (25184, 792905), (31480, 634324), (62960, 317162), (125920, 158581)]