81288540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5441}}^1$

素因数の和:5539

約数の個数: 72

約数和(自身を含む): 249591888

約数和(自身を除く): 168303348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1494, 1660, 2490, 2988, 3735, 4980, 5441, 7470, 10882, 14940, 16323, 21764, 27205, 32646, 48969, 54410, 65292, 81615, 97938, 108820, 163230, 195876, 244845, 326460, 451603, 489690, 903206, 979380, 1354809, 1806412, 2258015, 2709618, 4064427, 4516030, 5419236, 6774045, 8128854, 9032060, 13548090, 16257708, 20322135, 27096180, 40644270, 81288540]

約数ペア:

[(1, 81288540), (2, 40644270), (3, 27096180), (4, 20322135), (5, 16257708), (6, 13548090), (9, 9032060), (10, 8128854), (12, 6774045), (15, 5419236), (18, 4516030), (20, 4064427), (30, 2709618), (36, 2258015), (45, 1806412), (60, 1354809), (83, 979380), (90, 903206), (166, 489690), (180, 451603), (249, 326460), (332, 244845), (415, 195876), (498, 163230), (747, 108820), (830, 97938), (996, 81615), (1245, 65292), (1494, 54410), (1660, 48969), (2490, 32646), (2988, 27205), (3735, 21764), (4980, 16323), (5441, 14940), (7470, 10882)]