8781040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 80

約数和(自身を含む): 22096800

約数和(自身を除く): 13315760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 53, 76, 80, 95, 106, 109, 152, 190, 212, 218, 265, 304, 380, 424, 436, 530, 545, 760, 848, 872, 1007, 1060, 1090, 1520, 1744, 2014, 2071, 2120, 2180, 4028, 4142, 4240, 4360, 5035, 5777, 8056, 8284, 8720, 10070, 10355, 11554, 16112, 16568, 20140, 20710, 23108, 28885, 33136, 40280, 41420, 46216, 57770, 80560, 82840, 92432, 109763, 115540, 165680, 219526, 231080, 439052, 462160, 548815, 878104, 1097630, 1756208, 2195260, 4390520, 8781040]

約数ペア:

[(1, 8781040), (2, 4390520), (4, 2195260), (5, 1756208), (8, 1097630), (10, 878104), (16, 548815), (19, 462160), (20, 439052), (38, 231080), (40, 219526), (53, 165680), (76, 115540), (80, 109763), (95, 92432), (106, 82840), (109, 80560), (152, 57770), (190, 46216), (212, 41420), (218, 40280), (265, 33136), (304, 28885), (380, 23108), (424, 20710), (436, 20140), (530, 16568), (545, 16112), (760, 11554), (848, 10355), (872, 10070), (1007, 8720), (1060, 8284), (1090, 8056), (1520, 5777), (1744, 5035), (2014, 4360), (2071, 4240), (2120, 4142), (2180, 4028)]