81160720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{719}}^1$

素因数の和:832

約数の個数: 80

約数和(自身を含む): 202487040

約数和(自身を除く): 121326320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 83, 85, 136, 166, 170, 272, 332, 340, 415, 664, 680, 719, 830, 1328, 1360, 1411, 1438, 1660, 2822, 2876, 3320, 3595, 5644, 5752, 6640, 7055, 7190, 11288, 11504, 12223, 14110, 14380, 22576, 24446, 28220, 28760, 48892, 56440, 57520, 59677, 61115, 97784, 112880, 119354, 122230, 195568, 238708, 244460, 298385, 477416, 488920, 596770, 954832, 977840, 1014509, 1193540, 2029018, 2387080, 4058036, 4774160, 5072545, 8116072, 10145090, 16232144, 20290180, 40580360, 81160720]

約数ペア:

[(1, 81160720), (2, 40580360), (4, 20290180), (5, 16232144), (8, 10145090), (10, 8116072), (16, 5072545), (17, 4774160), (20, 4058036), (34, 2387080), (40, 2029018), (68, 1193540), (80, 1014509), (83, 977840), (85, 954832), (136, 596770), (166, 488920), (170, 477416), (272, 298385), (332, 244460), (340, 238708), (415, 195568), (664, 122230), (680, 119354), (719, 112880), (830, 97784), (1328, 61115), (1360, 59677), (1411, 57520), (1438, 56440), (1660, 48892), (2822, 28760), (2876, 28220), (3320, 24446), (3595, 22576), (5644, 14380), (5752, 14110), (6640, 12223), (7055, 11504), (7190, 11288)]