81699940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{601}}^1\times {\mathrm{971}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 196608384

約数和(自身を除く): 114908444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 601, 971, 1202, 1942, 2404, 3005, 3884, 4207, 4855, 6010, 6797, 8414, 9710, 12020, 13594, 16828, 19420, 21035, 27188, 33985, 42070, 67970, 84140, 135940, 583571, 1167142, 2334284, 2917855, 4084997, 5835710, 8169994, 11671420, 16339988, 20424985, 40849970, 81699940]

約数ペア:

[(1, 81699940), (2, 40849970), (4, 20424985), (5, 16339988), (7, 11671420), (10, 8169994), (14, 5835710), (20, 4084997), (28, 2917855), (35, 2334284), (70, 1167142), (140, 583571), (601, 135940), (971, 84140), (1202, 67970), (1942, 42070), (2404, 33985), (3005, 27188), (3884, 21035), (4207, 19420), (4855, 16828), (6010, 13594), (6797, 12020), (8414, 9710)]