213778845

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{75407}}^1$

素因数の和:75431

約数の個数: 40

約数和(自身を含む): 437969664

約数和(自身を除く): 224190819

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 75407, 226221, 377035, 527849, 678663, 1131105, 1583547, 2035989, 2639245, 3393315, 4750641, 6107967, 7917735, 10179945, 14251923, 23753205, 30539835, 42755769, 71259615, 213778845]

約数ペア:

[(1, 213778845), (3, 71259615), (5, 42755769), (7, 30539835), (9, 23753205), (15, 14251923), (21, 10179945), (27, 7917735), (35, 6107967), (45, 4750641), (63, 3393315), (81, 2639245), (105, 2035989), (135, 1583547), (189, 1131105), (315, 678663), (405, 527849), (567, 377035), (945, 226221), (2835, 75407)]