21183950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 20063410

約数列:

[1, 2, 5, 10, 25, 43, 50, 59, 86, 118, 167, 215, 295, 334, 430, 590, 835, 1075, 1475, 1670, 2150, 2537, 2950, 4175, 5074, 7181, 8350, 9853, 12685, 14362, 19706, 25370, 35905, 49265, 63425, 71810, 98530, 126850, 179525, 246325, 359050, 423679, 492650, 847358, 2118395, 4236790, 10591975, 21183950]

約数ペア:

[(1, 21183950), (2, 10591975), (5, 4236790), (10, 2118395), (25, 847358), (43, 492650), (50, 423679), (59, 359050), (86, 246325), (118, 179525), (167, 126850), (215, 98530), (295, 71810), (334, 63425), (430, 49265), (590, 35905), (835, 25370), (1075, 19706), (1475, 14362), (1670, 12685), (2150, 9853), (2537, 8350), (2950, 7181), (4175, 5074)]