21745120

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1$

素因数の和:368

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 34864160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 76, 80, 92, 95, 115, 152, 160, 184, 190, 230, 304, 311, 368, 380, 437, 460, 608, 622, 736, 760, 874, 920, 1244, 1520, 1555, 1748, 1840, 2185, 2488, 3040, 3110, 3496, 3680, 4370, 4976, 5909, 6220, 6992, 7153, 8740, 9952, 11818, 12440, 13984, 14306, 17480, 23636, 24880, 28612, 29545, 34960, 35765, 47272, 49760, 57224, 59090, 69920, 71530, 94544, 114448, 118180, 135907, 143060, 189088, 228896, 236360, 271814, 286120, 472720, 543628, 572240, 679535, 945440, 1087256, 1144480, 1359070, 2174512, 2718140, 4349024, 5436280, 10872560, 21745120]

約数ペア:

[(1, 21745120), (2, 10872560), (4, 5436280), (5, 4349024), (8, 2718140), (10, 2174512), (16, 1359070), (19, 1144480), (20, 1087256), (23, 945440), (32, 679535), (38, 572240), (40, 543628), (46, 472720), (76, 286120), (80, 271814), (92, 236360), (95, 228896), (115, 189088), (152, 143060), (160, 135907), (184, 118180), (190, 114448), (230, 94544), (304, 71530), (311, 69920), (368, 59090), (380, 57224), (437, 49760), (460, 47272), (608, 35765), (622, 34960), (736, 29545), (760, 28612), (874, 24880), (920, 23636), (1244, 17480), (1520, 14306), (1555, 13984), (1748, 12440), (1840, 11818), (2185, 9952), (2488, 8740), (3040, 7153), (3110, 6992), (3496, 6220), (3680, 5909), (4370, 4976)]