21246825

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 37319040

約数和(自身を除く): 16072215

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 109, 113, 115, 327, 339, 345, 545, 565, 575, 1635, 1695, 1725, 2507, 2599, 2725, 2825, 7521, 7797, 8175, 8475, 12317, 12535, 12995, 36951, 37605, 38985, 61585, 62675, 64975, 184755, 188025, 194925, 283291, 307925, 849873, 923775, 1416455, 4249365, 7082275, 21246825]

約数ペア:

[(1, 21246825), (3, 7082275), (5, 4249365), (15, 1416455), (23, 923775), (25, 849873), (69, 307925), (75, 283291), (109, 194925), (113, 188025), (115, 184755), (327, 64975), (339, 62675), (345, 61585), (545, 38985), (565, 37605), (575, 36951), (1635, 12995), (1695, 12535), (1725, 12317), (2507, 8475), (2599, 8175), (2725, 7797), (2825, 7521)]