2687860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 6564096

約数和(自身を除く): 3876236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 263, 292, 365, 511, 526, 730, 1022, 1052, 1315, 1460, 1841, 2044, 2555, 2630, 3682, 5110, 5260, 7364, 9205, 10220, 18410, 19199, 36820, 38398, 76796, 95995, 134393, 191990, 268786, 383980, 537572, 671965, 1343930, 2687860]

約数ペア:

[(1, 2687860), (2, 1343930), (4, 671965), (5, 537572), (7, 383980), (10, 268786), (14, 191990), (20, 134393), (28, 95995), (35, 76796), (70, 38398), (73, 36820), (140, 19199), (146, 18410), (263, 10220), (292, 9205), (365, 7364), (511, 5260), (526, 5110), (730, 3682), (1022, 2630), (1052, 2555), (1315, 2044), (1460, 1841)]