79745780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 172005120

約数和(自身を除く): 92259340

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 631, 710, 890, 1262, 1420, 1780, 2524, 3155, 6310, 6319, 12620, 12638, 25276, 31595, 44801, 56159, 63190, 89602, 112318, 126380, 179204, 224005, 224636, 280795, 448010, 561590, 896020, 1123180, 3987289, 7974578, 15949156, 19936445, 39872890, 79745780]

約数ペア:

[(1, 79745780), (2, 39872890), (4, 19936445), (5, 15949156), (10, 7974578), (20, 3987289), (71, 1123180), (89, 896020), (142, 561590), (178, 448010), (284, 280795), (355, 224636), (356, 224005), (445, 179204), (631, 126380), (710, 112318), (890, 89602), (1262, 63190), (1420, 56159), (1780, 44801), (2524, 31595), (3155, 25276), (6310, 12638), (6319, 12620)]