168804520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{47417}}^1$

素因数の和:47517

約数の個数: 32

約数和(自身を含む): 384085800

約数和(自身を除く): 215281280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 47417, 94834, 189668, 237085, 379336, 474170, 948340, 1896680, 4220113, 8440226, 16880452, 21100565, 33760904, 42201130, 84402260, 168804520]

約数ペア:

[(1, 168804520), (2, 84402260), (4, 42201130), (5, 33760904), (8, 21100565), (10, 16880452), (20, 8440226), (40, 4220113), (89, 1896680), (178, 948340), (356, 474170), (445, 379336), (712, 237085), (890, 189668), (1780, 94834), (3560, 47417)]