28713520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 74066688

約数和(自身を除く): 45353168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 335, 440, 487, 536, 670, 737, 880, 974, 1072, 1340, 1474, 1948, 2435, 2680, 2948, 3685, 3896, 4870, 5357, 5360, 5896, 7370, 7792, 9740, 10714, 11792, 14740, 19480, 21428, 26785, 29480, 32629, 38960, 42856, 53570, 58960, 65258, 85712, 107140, 130516, 163145, 214280, 261032, 326290, 358919, 428560, 522064, 652580, 717838, 1305160, 1435676, 1794595, 2610320, 2871352, 3589190, 5742704, 7178380, 14356760, 28713520]

約数ペア:

[(1, 28713520), (2, 14356760), (4, 7178380), (5, 5742704), (8, 3589190), (10, 2871352), (11, 2610320), (16, 1794595), (20, 1435676), (22, 1305160), (40, 717838), (44, 652580), (55, 522064), (67, 428560), (80, 358919), (88, 326290), (110, 261032), (134, 214280), (176, 163145), (220, 130516), (268, 107140), (335, 85712), (440, 65258), (487, 58960), (536, 53570), (670, 42856), (737, 38960), (880, 32629), (974, 29480), (1072, 26785), (1340, 21428), (1474, 19480), (1948, 14740), (2435, 11792), (2680, 10714), (2948, 9740), (3685, 7792), (3896, 7370), (4870, 5896), (5357, 5360)]