28166720

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 112

約数和(自身を含む): 72420480

約数和(自身を除く): 44253760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 43, 46, 64, 80, 86, 89, 92, 115, 160, 172, 178, 184, 215, 230, 320, 344, 356, 368, 430, 445, 460, 688, 712, 736, 860, 890, 920, 989, 1376, 1424, 1472, 1720, 1780, 1840, 1978, 2047, 2752, 2848, 3440, 3560, 3680, 3827, 3956, 4094, 4945, 5696, 6880, 7120, 7360, 7654, 7912, 8188, 9890, 10235, 13760, 14240, 15308, 15824, 16376, 19135, 19780, 20470, 28480, 30616, 31648, 32752, 38270, 39560, 40940, 61232, 63296, 65504, 76540, 79120, 81880, 88021, 122464, 131008, 153080, 158240, 163760, 176042, 244928, 306160, 316480, 327520, 352084, 440105, 612320, 655040, 704168, 880210, 1224640, 1408336, 1760420, 2816672, 3520840, 5633344, 7041680, 14083360, 28166720]

約数ペア:

[(1, 28166720), (2, 14083360), (4, 7041680), (5, 5633344), (8, 3520840), (10, 2816672), (16, 1760420), (20, 1408336), (23, 1224640), (32, 880210), (40, 704168), (43, 655040), (46, 612320), (64, 440105), (80, 352084), (86, 327520), (89, 316480), (92, 306160), (115, 244928), (160, 176042), (172, 163760), (178, 158240), (184, 153080), (215, 131008), (230, 122464), (320, 88021), (344, 81880), (356, 79120), (368, 76540), (430, 65504), (445, 63296), (460, 61232), (688, 40940), (712, 39560), (736, 38270), (860, 32752), (890, 31648), (920, 30616), (989, 28480), (1376, 20470), (1424, 19780), (1472, 19135), (1720, 16376), (1780, 15824), (1840, 15308), (1978, 14240), (2047, 13760), (2752, 10235), (2848, 9890), (3440, 8188), (3560, 7912), (3680, 7654), (3827, 7360), (3956, 7120), (4094, 6880), (4945, 5696)]