71345920

素因数分解:

$2^8\times 5^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:561

約数の個数: 72

約数和(自身を含む): 172554480

約数和(自身を除く): 101208560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 256, 278, 320, 401, 556, 640, 695, 802, 1112, 1280, 1390, 1604, 2005, 2224, 2780, 3208, 4010, 4448, 5560, 6416, 8020, 8896, 11120, 12832, 16040, 17792, 22240, 25664, 32080, 35584, 44480, 51328, 55739, 64160, 88960, 102656, 111478, 128320, 177920, 222956, 256640, 278695, 445912, 513280, 557390, 891824, 1114780, 1783648, 2229560, 3567296, 4459120, 7134592, 8918240, 14269184, 17836480, 35672960, 71345920]

約数ペア:

[(1, 71345920), (2, 35672960), (4, 17836480), (5, 14269184), (8, 8918240), (10, 7134592), (16, 4459120), (20, 3567296), (32, 2229560), (40, 1783648), (64, 1114780), (80, 891824), (128, 557390), (139, 513280), (160, 445912), (256, 278695), (278, 256640), (320, 222956), (401, 177920), (556, 128320), (640, 111478), (695, 102656), (802, 88960), (1112, 64160), (1280, 55739), (1390, 51328), (1604, 44480), (2005, 35584), (2224, 32080), (2780, 25664), (3208, 22240), (4010, 17792), (4448, 16040), (5560, 12832), (6416, 11120), (8020, 8896)]