20488935

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 37209600

約数和(自身を除く): 16720665

約数列:

[1, 3, 5, 15, 19, 29, 37, 57, 67, 87, 95, 111, 145, 185, 201, 285, 335, 435, 551, 555, 703, 1005, 1073, 1273, 1653, 1943, 2109, 2479, 2755, 3219, 3515, 3819, 5365, 5829, 6365, 7437, 8265, 9715, 10545, 12395, 16095, 19095, 20387, 29145, 36917, 37185, 47101, 61161, 71891, 101935, 110751, 141303, 184585, 215673, 235505, 305805, 359455, 553755, 706515, 1078365, 1365929, 4097787, 6829645, 20488935]

約数ペア:

[(1, 20488935), (3, 6829645), (5, 4097787), (15, 1365929), (19, 1078365), (29, 706515), (37, 553755), (57, 359455), (67, 305805), (87, 235505), (95, 215673), (111, 184585), (145, 141303), (185, 110751), (201, 101935), (285, 71891), (335, 61161), (435, 47101), (551, 37185), (555, 36917), (703, 29145), (1005, 20387), (1073, 19095), (1273, 16095), (1653, 12395), (1943, 10545), (2109, 9715), (2479, 8265), (2755, 7437), (3219, 6365), (3515, 5829), (3819, 5365)]