28807040

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:164

約数の個数: 128

約数和(自身を含む): 76377600

約数和(自身を除く): 47570560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 64, 76, 80, 92, 95, 103, 115, 128, 152, 160, 184, 190, 206, 230, 304, 320, 368, 380, 412, 437, 460, 515, 608, 640, 736, 760, 824, 874, 920, 1030, 1216, 1472, 1520, 1648, 1748, 1840, 1957, 2060, 2185, 2369, 2432, 2944, 3040, 3296, 3496, 3680, 3914, 4120, 4370, 4738, 6080, 6592, 6992, 7360, 7828, 8240, 8740, 9476, 9785, 11845, 12160, 13184, 13984, 14720, 15656, 16480, 17480, 18952, 19570, 23690, 27968, 31312, 32960, 34960, 37904, 39140, 45011, 47380, 55936, 62624, 65920, 69920, 75808, 78280, 90022, 94760, 125248, 139840, 151616, 156560, 180044, 189520, 225055, 250496, 279680, 303232, 313120, 360088, 379040, 450110, 626240, 720176, 758080, 900220, 1252480, 1440352, 1516160, 1800440, 2880704, 3600880, 5761408, 7201760, 14403520, 28807040]

約数ペア:

[(1, 28807040), (2, 14403520), (4, 7201760), (5, 5761408), (8, 3600880), (10, 2880704), (16, 1800440), (19, 1516160), (20, 1440352), (23, 1252480), (32, 900220), (38, 758080), (40, 720176), (46, 626240), (64, 450110), (76, 379040), (80, 360088), (92, 313120), (95, 303232), (103, 279680), (115, 250496), (128, 225055), (152, 189520), (160, 180044), (184, 156560), (190, 151616), (206, 139840), (230, 125248), (304, 94760), (320, 90022), (368, 78280), (380, 75808), (412, 69920), (437, 65920), (460, 62624), (515, 55936), (608, 47380), (640, 45011), (736, 39140), (760, 37904), (824, 34960), (874, 32960), (920, 31312), (1030, 27968), (1216, 23690), (1472, 19570), (1520, 18952), (1648, 17480), (1748, 16480), (1840, 15656), (1957, 14720), (2060, 13984), (2185, 13184), (2369, 12160), (2432, 11845), (2944, 9785), (3040, 9476), (3296, 8740), (3496, 8240), (3680, 7828), (3914, 7360), (4120, 6992), (4370, 6592), (4738, 6080)]