21039232

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 45410400

約数和(自身を除く): 24371168

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 128, 152, 164, 211, 304, 328, 422, 608, 656, 779, 844, 1216, 1312, 1558, 1688, 2432, 2624, 3116, 3376, 4009, 5248, 6232, 6752, 8018, 8651, 12464, 13504, 16036, 17302, 24928, 27008, 32072, 34604, 49856, 64144, 69208, 99712, 128288, 138416, 164369, 256576, 276832, 328738, 513152, 553664, 657476, 1107328, 1314952, 2629904, 5259808, 10519616, 21039232]

約数ペア:

[(1, 21039232), (2, 10519616), (4, 5259808), (8, 2629904), (16, 1314952), (19, 1107328), (32, 657476), (38, 553664), (41, 513152), (64, 328738), (76, 276832), (82, 256576), (128, 164369), (152, 138416), (164, 128288), (211, 99712), (304, 69208), (328, 64144), (422, 49856), (608, 34604), (656, 32072), (779, 27008), (844, 24928), (1216, 17302), (1312, 16036), (1558, 13504), (1688, 12464), (2432, 8651), (2624, 8018), (3116, 6752), (3376, 6232), (4009, 5248)]