21648752

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 26562448

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 59, 68, 71, 76, 118, 136, 142, 152, 236, 272, 284, 304, 323, 472, 568, 646, 944, 1003, 1121, 1136, 1207, 1292, 1349, 2006, 2242, 2414, 2584, 2698, 4012, 4189, 4484, 4828, 5168, 5396, 8024, 8378, 8968, 9656, 10792, 16048, 16756, 17936, 19057, 19312, 21584, 22933, 33512, 38114, 45866, 67024, 71213, 76228, 79591, 91732, 142426, 152456, 159182, 183464, 284852, 304912, 318364, 366928, 569704, 636728, 1139408, 1273456, 1353047, 2706094, 5412188, 10824376, 21648752]

約数ペア:

[(1, 21648752), (2, 10824376), (4, 5412188), (8, 2706094), (16, 1353047), (17, 1273456), (19, 1139408), (34, 636728), (38, 569704), (59, 366928), (68, 318364), (71, 304912), (76, 284852), (118, 183464), (136, 159182), (142, 152456), (152, 142426), (236, 91732), (272, 79591), (284, 76228), (304, 71213), (323, 67024), (472, 45866), (568, 38114), (646, 33512), (944, 22933), (1003, 21584), (1121, 19312), (1136, 19057), (1207, 17936), (1292, 16756), (1349, 16048), (2006, 10792), (2242, 9656), (2414, 8968), (2584, 8378), (2698, 8024), (4012, 5396), (4189, 5168), (4484, 4828)]