28820955

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{601}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 48545280

約数和(自身を除く): 19724325

約数列:

[1, 3, 5, 15, 23, 69, 115, 139, 345, 417, 601, 695, 1803, 2085, 3005, 3197, 9015, 9591, 13823, 15985, 41469, 47955, 69115, 83539, 207345, 250617, 417695, 1253085, 1921397, 5764191, 9606985, 28820955]

約数ペア:

[(1, 28820955), (3, 9606985), (5, 5764191), (15, 1921397), (23, 1253085), (69, 417695), (115, 250617), (139, 207345), (345, 83539), (417, 69115), (601, 47955), (695, 41469), (1803, 15985), (2085, 13823), (3005, 9591), (3197, 9015)]