678003980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{16369}}^1$

素因数の和:16506

約数の個数: 48

約数和(自身を含む): 1512588000

約数和(自身を除く): 834584020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1090, 2071, 2180, 4142, 8284, 10355, 16369, 20710, 32738, 41420, 65476, 81845, 163690, 311011, 327380, 622022, 1244044, 1555055, 1784221, 3110110, 3568442, 6220220, 7136884, 8921105, 17842210, 33900199, 35684420, 67800398, 135600796, 169500995, 339001990, 678003980]

約数ペア:

[(1, 678003980), (2, 339001990), (4, 169500995), (5, 135600796), (10, 67800398), (19, 35684420), (20, 33900199), (38, 17842210), (76, 8921105), (95, 7136884), (109, 6220220), (190, 3568442), (218, 3110110), (380, 1784221), (436, 1555055), (545, 1244044), (1090, 622022), (2071, 327380), (2180, 311011), (4142, 163690), (8284, 81845), (10355, 65476), (16369, 41420), (20710, 32738)]