19760979

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 11978925

約数列:

[1, 3, 7, 21, 23, 69, 161, 163, 251, 483, 489, 753, 1141, 1757, 3423, 3749, 5271, 5773, 11247, 17319, 26243, 40411, 40913, 78729, 121233, 122739, 286391, 859173, 940999, 2822997, 6586993, 19760979]

約数ペア:

[(1, 19760979), (3, 6586993), (7, 2822997), (21, 940999), (23, 859173), (69, 286391), (161, 122739), (163, 121233), (251, 78729), (483, 40913), (489, 40411), (753, 26243), (1141, 17319), (1757, 11247), (3423, 5773), (3749, 5271)]