20011131

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1217}}^1$

素因数の和:1265

約数の個数: 40

約数和(自身を含む): 35370720

約数和(自身を除く): 15359589

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1217, 1827, 2349, 3651, 5481, 8519, 10953, 16443, 25557, 32859, 35293, 76671, 98577, 105879, 230013, 247051, 317637, 690039, 741153, 952911, 2223459, 2858733, 6670377, 20011131]

約数ペア:

[(1, 20011131), (3, 6670377), (7, 2858733), (9, 2223459), (21, 952911), (27, 741153), (29, 690039), (63, 317637), (81, 247051), (87, 230013), (189, 105879), (203, 98577), (261, 76671), (567, 35293), (609, 32859), (783, 25557), (1217, 16443), (1827, 10953), (2349, 8519), (3651, 5481)]