20921727

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{1151}}^1$

素因数の和:1310

約数の個数: 16

約数和(自身を含む): 28643328

約数和(自身を除く): 7721601

約数列:

[1, 3, 73, 83, 219, 249, 1151, 3453, 6059, 18177, 84023, 95533, 252069, 286599, 6973909, 20921727]

約数ペア:

[(1, 20921727), (3, 6973909), (73, 286599), (83, 252069), (219, 95533), (249, 84023), (1151, 18177), (3453, 6059)]