19649720

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1061}}^1$

素因数の和:1535

約数の個数: 32

約数和(自身を含む): 44349120

約数和(自身を除く): 24699400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1061, 1852, 2122, 2315, 3704, 4244, 4630, 5305, 8488, 9260, 10610, 18520, 21220, 42440, 491243, 982486, 1964972, 2456215, 3929944, 4912430, 9824860, 19649720]

約数ペア:

[(1, 19649720), (2, 9824860), (4, 4912430), (5, 3929944), (8, 2456215), (10, 1964972), (20, 982486), (40, 491243), (463, 42440), (926, 21220), (1061, 18520), (1852, 10610), (2122, 9260), (2315, 8488), (3704, 5305), (4244, 4630)]