20387280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{84947}}^1$

素因数の和:84963

約数の個数: 40

約数和(自身を含む): 63201312

約数和(自身を除く): 42814032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 84947, 169894, 254841, 339788, 424735, 509682, 679576, 849470, 1019364, 1274205, 1359152, 1698940, 2038728, 2548410, 3397880, 4077456, 5096820, 6795760, 10193640, 20387280]

約数ペア:

[(1, 20387280), (2, 10193640), (3, 6795760), (4, 5096820), (5, 4077456), (6, 3397880), (8, 2548410), (10, 2038728), (12, 1698940), (15, 1359152), (16, 1274205), (20, 1019364), (24, 849470), (30, 679576), (40, 509682), (48, 424735), (60, 339788), (80, 254841), (120, 169894), (240, 84947)]