21475244

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1091}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 46475520

約数和(自身を除く): 25000276

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 518, 532, 703, 1036, 1091, 1406, 2182, 2812, 4364, 4921, 7637, 9842, 15274, 19684, 20729, 30548, 40367, 41458, 80734, 82916, 145103, 161468, 282569, 290206, 565138, 580412, 766973, 1130276, 1533946, 3067892, 5368811, 10737622, 21475244]

約数ペア:

[(1, 21475244), (2, 10737622), (4, 5368811), (7, 3067892), (14, 1533946), (19, 1130276), (28, 766973), (37, 580412), (38, 565138), (74, 290206), (76, 282569), (133, 161468), (148, 145103), (259, 82916), (266, 80734), (518, 41458), (532, 40367), (703, 30548), (1036, 20729), (1091, 19684), (1406, 15274), (2182, 9842), (2812, 7637), (4364, 4921)]