21475168

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^2$

素因数の和:85

約数の個数: 108

約数和(自身を含む): 52710588

約数和(自身を除く): 31235420

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 32, 38, 44, 52, 76, 88, 104, 143, 152, 169, 176, 208, 209, 247, 286, 304, 338, 352, 361, 416, 418, 494, 572, 608, 676, 722, 836, 988, 1144, 1352, 1444, 1672, 1859, 1976, 2288, 2704, 2717, 2888, 3211, 3344, 3718, 3952, 3971, 4576, 4693, 5408, 5434, 5776, 6422, 6688, 7436, 7904, 7942, 9386, 10868, 11552, 12844, 14872, 15884, 18772, 21736, 25688, 29744, 31768, 35321, 37544, 43472, 51376, 51623, 59488, 61009, 63536, 70642, 75088, 86944, 102752, 103246, 122018, 127072, 141284, 150176, 206492, 244036, 282568, 412984, 488072, 565136, 671099, 825968, 976144, 1130272, 1342198, 1651936, 1952288, 2684396, 5368792, 10737584, 21475168]

約数ペア:

[(1, 21475168), (2, 10737584), (4, 5368792), (8, 2684396), (11, 1952288), (13, 1651936), (16, 1342198), (19, 1130272), (22, 976144), (26, 825968), (32, 671099), (38, 565136), (44, 488072), (52, 412984), (76, 282568), (88, 244036), (104, 206492), (143, 150176), (152, 141284), (169, 127072), (176, 122018), (208, 103246), (209, 102752), (247, 86944), (286, 75088), (304, 70642), (338, 63536), (352, 61009), (361, 59488), (416, 51623), (418, 51376), (494, 43472), (572, 37544), (608, 35321), (676, 31768), (722, 29744), (836, 25688), (988, 21736), (1144, 18772), (1352, 15884), (1444, 14872), (1672, 12844), (1859, 11552), (1976, 10868), (2288, 9386), (2704, 7942), (2717, 7904), (2888, 7436), (3211, 6688), (3344, 6422), (3718, 5776), (3952, 5434), (3971, 5408), (4576, 4693)]