8021979

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 13325312

約数和(自身を除く): 5303333

約数列:

[1, 3, 7, 9, 21, 63, 223, 571, 669, 1561, 1713, 2007, 3997, 4683, 5139, 11991, 14049, 35973, 127333, 381999, 891331, 1145997, 2673993, 8021979]

約数ペア:

[(1, 8021979), (3, 2673993), (7, 1145997), (9, 891331), (21, 381999), (63, 127333), (223, 35973), (571, 14049), (669, 11991), (1561, 5139), (1713, 4683), (2007, 3997)]