19802289

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{13723}}^1$

素因数の和:13776

約数の個数: 16

約数和(自身を含む): 29204672

約数和(自身を除く): 9402383

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 13723, 41169, 178399, 507751, 535197, 1523253, 6600763, 19802289]

約数ペア:

[(1, 19802289), (3, 6600763), (13, 1523253), (37, 535197), (39, 507751), (111, 178399), (481, 41169), (1443, 13723)]