21000407038

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1\times {\mathrm{1225657}}^1$

素因数の和:1226331

約数の個数: 16

約数和(自身を含む): 33975239760

約数和(自身を除く): 12974832722

約数列:

[1, 2, 13, 26, 659, 1318, 8567, 17134, 1225657, 2451314, 15933541, 31867082, 807707963, 1615415926, 10500203519, 21000407038]

約数ペア:

[(1, 21000407038), (2, 10500203519), (13, 1615415926), (26, 807707963), (659, 31867082), (1318, 15933541), (8567, 2451314), (17134, 1225657)]