20387870

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1\times {\mathrm{307}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 38253600

約数和(自身を除く): 17865730

約数列:

[1, 2, 5, 10, 29, 58, 145, 229, 290, 307, 458, 614, 1145, 1535, 2290, 3070, 6641, 8903, 13282, 17806, 33205, 44515, 66410, 70303, 89030, 140606, 351515, 703030, 2038787, 4077574, 10193935, 20387870]

約数ペア:

[(1, 20387870), (2, 10193935), (5, 4077574), (10, 2038787), (29, 703030), (58, 351515), (145, 140606), (229, 89030), (290, 70303), (307, 66410), (458, 44515), (614, 33205), (1145, 17806), (1535, 13282), (2290, 8903), (3070, 6641)]