21391473

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{12941}}^1$

素因数の和:12992

約数の個数: 16

約数和(自身を含む): 31060800

約数和(自身を除く): 9669327

約数列:

[1, 3, 19, 29, 57, 87, 551, 1653, 12941, 38823, 245879, 375289, 737637, 1125867, 7130491, 21391473]

約数ペア:

[(1, 21391473), (3, 7130491), (19, 1125867), (29, 737637), (57, 375289), (87, 245879), (551, 38823), (1653, 12941)]