21097869

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 10472691

約数列:

[1, 3, 13, 39, 53, 59, 159, 173, 177, 519, 689, 767, 2067, 2249, 2301, 3127, 6747, 9169, 9381, 10207, 27507, 30621, 40651, 119197, 121953, 132691, 357591, 398073, 540971, 1622913, 7032623, 21097869]

約数ペア:

[(1, 21097869), (3, 7032623), (13, 1622913), (39, 540971), (53, 398073), (59, 357591), (159, 132691), (173, 121953), (177, 119197), (519, 40651), (689, 30621), (767, 27507), (2067, 10207), (2249, 9381), (2301, 9169), (3127, 6747)]