20403225

素因数分解:

$3^3\times 5^2\times {\mathrm{167}}^1\times {\mathrm{181}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 37914240

約数和(自身を除く): 17511015

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 167, 181, 225, 501, 543, 675, 835, 905, 1503, 1629, 2505, 2715, 4175, 4509, 4525, 4887, 7515, 8145, 12525, 13575, 22545, 24435, 30227, 37575, 40725, 90681, 112725, 122175, 151135, 272043, 453405, 755675, 816129, 1360215, 2267025, 4080645, 6801075, 20403225]

約数ペア:

[(1, 20403225), (3, 6801075), (5, 4080645), (9, 2267025), (15, 1360215), (25, 816129), (27, 755675), (45, 453405), (75, 272043), (135, 151135), (167, 122175), (181, 112725), (225, 90681), (501, 40725), (543, 37575), (675, 30227), (835, 24435), (905, 22545), (1503, 13575), (1629, 12525), (2505, 8145), (2715, 7515), (4175, 4887), (4509, 4525)]