21131424

素因数分解:

$2^5\times 3^2\times {\mathrm{239}}^1\times {\mathrm{307}}^1$

素因数の和:562

約数の個数: 72

約数和(自身を含む): 60540480

約数和(自身を除く): 39409056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 239, 288, 307, 478, 614, 717, 921, 956, 1228, 1434, 1842, 1912, 2151, 2456, 2763, 2868, 3684, 3824, 4302, 4912, 5526, 5736, 7368, 7648, 8604, 9824, 11052, 11472, 14736, 17208, 22104, 22944, 29472, 34416, 44208, 68832, 73373, 88416, 146746, 220119, 293492, 440238, 586984, 660357, 880476, 1173968, 1320714, 1760952, 2347936, 2641428, 3521904, 5282856, 7043808, 10565712, 21131424]

約数ペア:

[(1, 21131424), (2, 10565712), (3, 7043808), (4, 5282856), (6, 3521904), (8, 2641428), (9, 2347936), (12, 1760952), (16, 1320714), (18, 1173968), (24, 880476), (32, 660357), (36, 586984), (48, 440238), (72, 293492), (96, 220119), (144, 146746), (239, 88416), (288, 73373), (307, 68832), (478, 44208), (614, 34416), (717, 29472), (921, 22944), (956, 22104), (1228, 17208), (1434, 14736), (1842, 11472), (1912, 11052), (2151, 9824), (2456, 8604), (2763, 7648), (2868, 7368), (3684, 5736), (3824, 5526), (4302, 4912)]