18784760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15149}}^1$

素因数の和:15191

約数の個数: 32

約数和(自身を含む): 43632000

約数和(自身を除く): 24847240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15149, 30298, 60596, 75745, 121192, 151490, 302980, 469619, 605960, 939238, 1878476, 2348095, 3756952, 4696190, 9392380, 18784760]

約数ペア:

[(1, 18784760), (2, 9392380), (4, 4696190), (5, 3756952), (8, 2348095), (10, 1878476), (20, 939238), (31, 605960), (40, 469619), (62, 302980), (124, 151490), (155, 121192), (248, 75745), (310, 60596), (620, 30298), (1240, 15149)]