28212387

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 46577664

約数和(自身を除く): 18365277

約数列:

[1, 3, 7, 21, 31, 41, 49, 93, 123, 147, 151, 217, 287, 453, 651, 861, 1057, 1271, 1519, 2009, 3171, 3813, 4557, 4681, 6027, 6191, 7399, 8897, 14043, 18573, 22197, 26691, 32767, 43337, 62279, 98301, 130011, 186837, 191921, 229369, 303359, 575763, 688107, 910077, 1343447, 4030341, 9404129, 28212387]

約数ペア:

[(1, 28212387), (3, 9404129), (7, 4030341), (21, 1343447), (31, 910077), (41, 688107), (49, 575763), (93, 303359), (123, 229369), (147, 191921), (151, 186837), (217, 130011), (287, 98301), (453, 62279), (651, 43337), (861, 32767), (1057, 26691), (1271, 22197), (1519, 18573), (2009, 14043), (3171, 8897), (3813, 7399), (4557, 6191), (4681, 6027)]