156788360

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{197}}^2$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 358084260

約数和(自身を除く): 201295900

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 197, 202, 394, 404, 505, 788, 808, 985, 1010, 1576, 1970, 2020, 3940, 4040, 7880, 19897, 38809, 39794, 77618, 79588, 99485, 155236, 159176, 194045, 198970, 310472, 388090, 397940, 776180, 795880, 1552360, 3919709, 7839418, 15678836, 19598545, 31357672, 39197090, 78394180, 156788360]

約数ペア:

[(1, 156788360), (2, 78394180), (4, 39197090), (5, 31357672), (8, 19598545), (10, 15678836), (20, 7839418), (40, 3919709), (101, 1552360), (197, 795880), (202, 776180), (394, 397940), (404, 388090), (505, 310472), (788, 198970), (808, 194045), (985, 159176), (1010, 155236), (1576, 99485), (1970, 79588), (2020, 77618), (3940, 39794), (4040, 38809), (7880, 19897)]