20387490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1747}}^1$

素因数の和:2146

約数の個数: 32

約数和(自身を含む): 49083840

約数和(自身を除く): 28696350

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 389, 778, 1167, 1747, 1945, 2334, 3494, 3890, 5241, 5835, 8735, 10482, 11670, 17470, 26205, 52410, 679583, 1359166, 2038749, 3397915, 4077498, 6795830, 10193745, 20387490]

約数ペア:

[(1, 20387490), (2, 10193745), (3, 6795830), (5, 4077498), (6, 3397915), (10, 2038749), (15, 1359166), (30, 679583), (389, 52410), (778, 26205), (1167, 17470), (1747, 11670), (1945, 10482), (2334, 8735), (3494, 5835), (3890, 5241)]