19985596953

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{115343}}^1$

素因数の和:115613

約数の個数: 32

約数和(自身を含む): 31417860096

約数和(自身を除く): 11432263143

約数列:

[1, 3, 7, 21, 37, 111, 223, 259, 669, 777, 1561, 4683, 8251, 24753, 57757, 115343, 173271, 346029, 807401, 2422203, 4267691, 12803073, 25721489, 29873837, 77164467, 89621511, 180050423, 540151269, 951695093, 2855085279, 6661865651, 19985596953]

約数ペア:

[(1, 19985596953), (3, 6661865651), (7, 2855085279), (21, 951695093), (37, 540151269), (111, 180050423), (223, 89621511), (259, 77164467), (669, 29873837), (777, 25721489), (1561, 12803073), (4683, 4267691), (8251, 2422203), (24753, 807401), (57757, 346029), (115343, 173271)]