31578729

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{883}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 52276224

約数和(自身を除く): 20697495

約数列:

[1, 3, 7, 13, 21, 39, 91, 131, 273, 393, 883, 917, 1703, 2649, 2751, 5109, 6181, 11479, 11921, 18543, 34437, 35763, 80353, 115673, 241059, 347019, 809711, 1503749, 2429133, 4511247, 10526243, 31578729]

約数ペア:

[(1, 31578729), (3, 10526243), (7, 4511247), (13, 2429133), (21, 1503749), (39, 809711), (91, 347019), (131, 241059), (273, 115673), (393, 80353), (883, 35763), (917, 34437), (1703, 18543), (2649, 11921), (2751, 11479), (5109, 6181)]