81756640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72997}}^1$

素因数の和:73019

約数の個数: 48

約数和(自身を含む): 220745952

約数和(自身を除く): 138989312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72997, 145994, 291988, 364985, 510979, 583976, 729970, 1021958, 1167952, 1459940, 2043916, 2335904, 2554895, 2919880, 4087832, 5109790, 5839760, 8175664, 10219580, 11679520, 16351328, 20439160, 40878320, 81756640]

約数ペア:

[(1, 81756640), (2, 40878320), (4, 20439160), (5, 16351328), (7, 11679520), (8, 10219580), (10, 8175664), (14, 5839760), (16, 5109790), (20, 4087832), (28, 2919880), (32, 2554895), (35, 2335904), (40, 2043916), (56, 1459940), (70, 1167952), (80, 1021958), (112, 729970), (140, 583976), (160, 510979), (224, 364985), (280, 291988), (560, 145994), (1120, 72997)]