20474012

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{977}}^1$

素因数の和:1038

約数の個数: 36

約数和(自身を含む): 40090176

約数和(自身を除く): 19616164

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 977, 1612, 1954, 3908, 5239, 10478, 12701, 20956, 25402, 30287, 50804, 60574, 121148, 165113, 330226, 393731, 660452, 787462, 1574924, 5118503, 10237006, 20474012]

約数ペア:

[(1, 20474012), (2, 10237006), (4, 5118503), (13, 1574924), (26, 787462), (31, 660452), (52, 393731), (62, 330226), (124, 165113), (169, 121148), (338, 60574), (403, 50804), (676, 30287), (806, 25402), (977, 20956), (1612, 12701), (1954, 10478), (3908, 5239)]