20796640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6841}}^1$

素因数の和:6875

約数の個数: 48

約数和(自身を含む): 51725520

約数和(自身を除く): 30928880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6841, 13682, 27364, 34205, 54728, 68410, 109456, 129979, 136820, 218912, 259958, 273640, 519916, 547280, 649895, 1039832, 1094560, 1299790, 2079664, 2599580, 4159328, 5199160, 10398320, 20796640]

約数ペア:

[(1, 20796640), (2, 10398320), (4, 5199160), (5, 4159328), (8, 2599580), (10, 2079664), (16, 1299790), (19, 1094560), (20, 1039832), (32, 649895), (38, 547280), (40, 519916), (76, 273640), (80, 259958), (95, 218912), (152, 136820), (160, 129979), (190, 109456), (304, 68410), (380, 54728), (608, 34205), (760, 27364), (1520, 13682), (3040, 6841)]