81754240

素因数分解:

$2^7\times 5^1\times {\mathrm{139}}^1\times {\mathrm{919}}^1$

素因数の和:1077

約数の個数: 64

約数和(自身を含む): 197064000

約数和(自身を除く): 115309760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 278, 320, 556, 640, 695, 919, 1112, 1390, 1838, 2224, 2780, 3676, 4448, 4595, 5560, 7352, 8896, 9190, 11120, 14704, 17792, 18380, 22240, 29408, 36760, 44480, 58816, 73520, 88960, 117632, 127741, 147040, 255482, 294080, 510964, 588160, 638705, 1021928, 1277410, 2043856, 2554820, 4087712, 5109640, 8175424, 10219280, 16350848, 20438560, 40877120, 81754240]

約数ペア:

[(1, 81754240), (2, 40877120), (4, 20438560), (5, 16350848), (8, 10219280), (10, 8175424), (16, 5109640), (20, 4087712), (32, 2554820), (40, 2043856), (64, 1277410), (80, 1021928), (128, 638705), (139, 588160), (160, 510964), (278, 294080), (320, 255482), (556, 147040), (640, 127741), (695, 117632), (919, 88960), (1112, 73520), (1390, 58816), (1838, 44480), (2224, 36760), (2780, 29408), (3676, 22240), (4448, 18380), (4595, 17792), (5560, 14704), (7352, 11120), (8896, 9190)]