78863440

素因数分解:

$2^4\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1009}}^1$

素因数の和:1999

約数の個数: 40

約数和(自身を含む): 183727080

約数和(自身を除く): 104863640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 977, 1009, 1954, 2018, 3908, 4036, 4885, 5045, 7816, 8072, 9770, 10090, 15632, 16144, 19540, 20180, 39080, 40360, 78160, 80720, 985793, 1971586, 3943172, 4928965, 7886344, 9857930, 15772688, 19715860, 39431720, 78863440]

約数ペア:

[(1, 78863440), (2, 39431720), (4, 19715860), (5, 15772688), (8, 9857930), (10, 7886344), (16, 4928965), (20, 3943172), (40, 1971586), (80, 985793), (977, 80720), (1009, 78160), (1954, 40360), (2018, 39080), (3908, 20180), (4036, 19540), (4885, 16144), (5045, 15632), (7816, 10090), (8072, 9770)]