20807584

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4889}}^1$

素因数の和:4925

約数の個数: 48

約数和(自身を含む): 49291200

約数和(自身を除く): 28483616

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4889, 9778, 19556, 34223, 39112, 68446, 78224, 92891, 136892, 156448, 185782, 273784, 371564, 547568, 650237, 743128, 1095136, 1300474, 1486256, 2600948, 2972512, 5201896, 10403792, 20807584]

約数ペア:

[(1, 20807584), (2, 10403792), (4, 5201896), (7, 2972512), (8, 2600948), (14, 1486256), (16, 1300474), (19, 1095136), (28, 743128), (32, 650237), (38, 547568), (56, 371564), (76, 273784), (112, 185782), (133, 156448), (152, 136892), (224, 92891), (266, 78224), (304, 68446), (532, 39112), (608, 34223), (1064, 19556), (2128, 9778), (4256, 4889)]