64520720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{467}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 165043008

約数和(自身を除く): 100522288

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 157, 176, 220, 314, 440, 467, 628, 785, 880, 934, 1256, 1570, 1727, 1868, 2335, 2512, 3140, 3454, 3736, 4670, 5137, 6280, 6908, 7472, 8635, 9340, 10274, 12560, 13816, 17270, 18680, 20548, 25685, 27632, 34540, 37360, 41096, 51370, 69080, 73319, 82192, 102740, 138160, 146638, 205480, 293276, 366595, 410960, 586552, 733190, 806509, 1173104, 1466380, 1613018, 2932760, 3226036, 4032545, 5865520, 6452072, 8065090, 12904144, 16130180, 32260360, 64520720]

約数ペア:

[(1, 64520720), (2, 32260360), (4, 16130180), (5, 12904144), (8, 8065090), (10, 6452072), (11, 5865520), (16, 4032545), (20, 3226036), (22, 2932760), (40, 1613018), (44, 1466380), (55, 1173104), (80, 806509), (88, 733190), (110, 586552), (157, 410960), (176, 366595), (220, 293276), (314, 205480), (440, 146638), (467, 138160), (628, 102740), (785, 82192), (880, 73319), (934, 69080), (1256, 51370), (1570, 41096), (1727, 37360), (1868, 34540), (2335, 27632), (2512, 25685), (3140, 20548), (3454, 18680), (3736, 17270), (4670, 13816), (5137, 12560), (6280, 10274), (6908, 9340), (7472, 8635)]