21000398505

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{787}}^1\times {\mathrm{8431}}^1$

素因数の和:9437

約数の個数: 32

約数和(自身を含む): 33806788608

約数和(自身を除く): 12806390103

約数列:

[1, 3, 5, 15, 211, 633, 787, 1055, 2361, 3165, 3935, 8431, 11805, 25293, 42155, 126465, 166057, 498171, 830285, 1778941, 2490855, 5336823, 6635197, 8894705, 19905591, 26684115, 33175985, 99527955, 1400026567, 4200079701, 7000132835, 21000398505]

約数ペア:

[(1, 21000398505), (3, 7000132835), (5, 4200079701), (15, 1400026567), (211, 99527955), (633, 33175985), (787, 26684115), (1055, 19905591), (2361, 8894705), (3165, 6635197), (3935, 5336823), (8431, 2490855), (11805, 1778941), (25293, 830285), (42155, 498171), (126465, 166057)]