216996963

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 304128000

約数和(自身を除く): 87131037

約数列:

[1, 3, 43, 79, 107, 129, 199, 237, 321, 597, 3397, 4601, 8453, 8557, 10191, 13803, 15721, 21293, 25359, 25671, 47163, 63879, 363479, 676003, 915599, 1090437, 1682147, 2028009, 2746797, 5046441, 72332321, 216996963]

約数ペア:

[(1, 216996963), (3, 72332321), (43, 5046441), (79, 2746797), (107, 2028009), (129, 1682147), (199, 1090437), (237, 915599), (321, 676003), (597, 363479), (3397, 63879), (4601, 47163), (8453, 25671), (8557, 25359), (10191, 21293), (13803, 15721)]