21000317758

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78948563}}^1$

素因数の和:78948591

約数の個数: 16

約数和(自身を含む): 37895310720

約数和(自身を除く): 16894992962

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78948563, 157897126, 552639941, 1105279882, 1500022697, 3000045394, 10500158879, 21000317758]

約数ペア:

[(1, 21000317758), (2, 10500158879), (7, 3000045394), (14, 1500022697), (19, 1105279882), (38, 552639941), (133, 157897126), (266, 78948563)]