19977843

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{617}}^1$

素因数の和:914

約数の個数: 16

約数和(自身を含む): 27409536

約数和(自身を除く): 7431693

約数列:

[1, 3, 43, 129, 251, 617, 753, 1851, 10793, 26531, 32379, 79593, 154867, 464601, 6659281, 19977843]

約数ペア:

[(1, 19977843), (3, 6659281), (43, 464601), (129, 154867), (251, 79593), (617, 32379), (753, 26531), (1851, 10793)]