28947660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:615

約数の個数: 96

約数和(自身を含む): 93434880

約数和(自身を除く): 64487220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 157, 210, 314, 420, 439, 471, 628, 785, 878, 942, 1099, 1317, 1570, 1756, 1884, 2195, 2198, 2355, 2634, 3073, 3140, 3297, 4390, 4396, 4710, 5268, 5495, 6146, 6585, 6594, 8780, 9219, 9420, 10990, 12292, 13170, 13188, 15365, 16485, 18438, 21980, 26340, 30730, 32970, 36876, 46095, 61460, 65940, 68923, 92190, 137846, 184380, 206769, 275692, 344615, 413538, 482461, 689230, 827076, 964922, 1033845, 1378460, 1447383, 1929844, 2067690, 2412305, 2894766, 4135380, 4824610, 5789532, 7236915, 9649220, 14473830, 28947660]

約数ペア:

[(1, 28947660), (2, 14473830), (3, 9649220), (4, 7236915), (5, 5789532), (6, 4824610), (7, 4135380), (10, 2894766), (12, 2412305), (14, 2067690), (15, 1929844), (20, 1447383), (21, 1378460), (28, 1033845), (30, 964922), (35, 827076), (42, 689230), (60, 482461), (70, 413538), (84, 344615), (105, 275692), (140, 206769), (157, 184380), (210, 137846), (314, 92190), (420, 68923), (439, 65940), (471, 61460), (628, 46095), (785, 36876), (878, 32970), (942, 30730), (1099, 26340), (1317, 21980), (1570, 18438), (1756, 16485), (1884, 15365), (2195, 13188), (2198, 13170), (2355, 12292), (2634, 10990), (3073, 9420), (3140, 9219), (3297, 8780), (4390, 6594), (4396, 6585), (4710, 6146), (5268, 5495)]