20512761988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{111577}}^1$

素因数の和:111700

約数の個数: 48

約数和(自身を含む): 39364718400

約数和(自身を除く): 18851956412

約数列:

[1, 2, 4, 19, 38, 41, 59, 76, 82, 118, 164, 236, 779, 1121, 1558, 2242, 2419, 3116, 4484, 4838, 9676, 45961, 91922, 111577, 183844, 223154, 446308, 2119963, 4239926, 4574657, 6583043, 8479852, 9149314, 13166086, 18298628, 26332172, 86918483, 125077817, 173836966, 250155634, 269904763, 347673932, 500311268, 539809526, 1079619052, 5128190497, 10256380994, 20512761988]

約数ペア:

[(1, 20512761988), (2, 10256380994), (4, 5128190497), (19, 1079619052), (38, 539809526), (41, 500311268), (59, 347673932), (76, 269904763), (82, 250155634), (118, 173836966), (164, 125077817), (236, 86918483), (779, 26332172), (1121, 18298628), (1558, 13166086), (2242, 9149314), (2419, 8479852), (3116, 6583043), (4484, 4574657), (4838, 4239926), (9676, 2119963), (45961, 446308), (91922, 223154), (111577, 183844)]