28411520

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 68739840

約数和(自身を除く): 40328320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 320, 412, 431, 515, 640, 824, 862, 1030, 1648, 1724, 2060, 2155, 3296, 3448, 4120, 4310, 6592, 6896, 8240, 8620, 13184, 13792, 16480, 17240, 27584, 32960, 34480, 44393, 55168, 65920, 68960, 88786, 137920, 177572, 221965, 275840, 355144, 443930, 710288, 887860, 1420576, 1775720, 2841152, 3551440, 5682304, 7102880, 14205760, 28411520]

約数ペア:

[(1, 28411520), (2, 14205760), (4, 7102880), (5, 5682304), (8, 3551440), (10, 2841152), (16, 1775720), (20, 1420576), (32, 887860), (40, 710288), (64, 443930), (80, 355144), (103, 275840), (128, 221965), (160, 177572), (206, 137920), (320, 88786), (412, 68960), (431, 65920), (515, 55168), (640, 44393), (824, 34480), (862, 32960), (1030, 27584), (1648, 17240), (1724, 16480), (2060, 13792), (2155, 13184), (3296, 8620), (3448, 8240), (4120, 6896), (4310, 6592)]