21200697

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:427

約数の個数: 40

約数和(自身を含む): 36590400

約数和(自身を除く): 15389703

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 269, 417, 567, 807, 973, 1251, 1883, 2421, 2919, 3753, 5649, 7263, 8757, 11259, 16947, 21789, 26271, 37391, 50841, 78813, 112173, 152523, 261737, 336519, 785211, 1009557, 2355633, 3028671, 7066899, 21200697]

約数ペア:

[(1, 21200697), (3, 7066899), (7, 3028671), (9, 2355633), (21, 1009557), (27, 785211), (63, 336519), (81, 261737), (139, 152523), (189, 112173), (269, 78813), (417, 50841), (567, 37391), (807, 26271), (973, 21789), (1251, 16947), (1883, 11259), (2421, 8757), (2919, 7263), (3753, 5649)]