221778

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^2$

素因数の和:88

約数の個数: 30

約数和(自身を含む): 510741

約数和(自身を除く): 288963

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1369, 1998, 2738, 2997, 4107, 5994, 8214, 12321, 24642, 36963, 73926, 110889, 221778]

約数ペア:

[(1, 221778), (2, 110889), (3, 73926), (6, 36963), (9, 24642), (18, 12321), (27, 8214), (37, 5994), (54, 4107), (74, 2997), (81, 2738), (111, 1998), (162, 1369), (222, 999), (333, 666)]