28709247

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{541}}^1$

素因数の和:596

約数の個数: 36

約数和(自身を含む): 47082456

約数和(自身を除く): 18373209

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 399, 541, 931, 1083, 1623, 2527, 2793, 3787, 7581, 10279, 11361, 17689, 26509, 30837, 53067, 71953, 79527, 195301, 215859, 503671, 585903, 1367107, 1511013, 4101321, 9569749, 28709247]

約数ペア:

[(1, 28709247), (3, 9569749), (7, 4101321), (19, 1511013), (21, 1367107), (49, 585903), (57, 503671), (133, 215859), (147, 195301), (361, 79527), (399, 71953), (541, 53067), (931, 30837), (1083, 26509), (1623, 17689), (2527, 11361), (2793, 10279), (3787, 7581)]