20820352

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1223}}^1$

素因数の和:1263

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 29118848

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 266, 304, 448, 532, 608, 896, 1064, 1216, 1223, 2128, 2432, 2446, 4256, 4892, 8512, 8561, 9784, 17024, 17122, 19568, 23237, 34244, 39136, 46474, 68488, 78272, 92948, 136976, 156544, 162659, 185896, 273952, 325318, 371792, 547904, 650636, 743584, 1095808, 1301272, 1487168, 2602544, 2974336, 5205088, 10410176, 20820352]

約数ペア:

[(1, 20820352), (2, 10410176), (4, 5205088), (7, 2974336), (8, 2602544), (14, 1487168), (16, 1301272), (19, 1095808), (28, 743584), (32, 650636), (38, 547904), (56, 371792), (64, 325318), (76, 273952), (112, 185896), (128, 162659), (133, 156544), (152, 136976), (224, 92948), (266, 78272), (304, 68488), (448, 46474), (532, 39136), (608, 34244), (896, 23237), (1064, 19568), (1216, 17122), (1223, 17024), (2128, 9784), (2432, 8561), (2446, 8512), (4256, 4892)]