21200872

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{271}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 50135040

約数和(自身を除く): 28934168

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 127, 154, 254, 271, 308, 508, 542, 616, 889, 1016, 1084, 1397, 1778, 1897, 2168, 2794, 2981, 3556, 3794, 5588, 5962, 7112, 7588, 9779, 11176, 11924, 15176, 19558, 20867, 23848, 34417, 39116, 41734, 68834, 78232, 83468, 137668, 166936, 240919, 275336, 378587, 481838, 757174, 963676, 1514348, 1927352, 2650109, 3028696, 5300218, 10600436, 21200872]

約数ペア:

[(1, 21200872), (2, 10600436), (4, 5300218), (7, 3028696), (8, 2650109), (11, 1927352), (14, 1514348), (22, 963676), (28, 757174), (44, 481838), (56, 378587), (77, 275336), (88, 240919), (127, 166936), (154, 137668), (254, 83468), (271, 78232), (308, 68834), (508, 41734), (542, 39116), (616, 34417), (889, 23848), (1016, 20867), (1084, 19558), (1397, 15176), (1778, 11924), (1897, 11176), (2168, 9779), (2794, 7588), (2981, 7112), (3556, 5962), (3794, 5588)]