1916571839

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{61403}}^1$

素因数の和:61444

約数の個数: 20

約数和(自身を含む): 2407896456

約数和(自身を除く): 491324617

約数列:

[1, 7, 13, 49, 91, 343, 637, 2401, 4459, 31213, 61403, 429821, 798239, 3008747, 5587673, 21061229, 39113711, 147428603, 273795977, 1916571839]

約数ペア:

[(1, 1916571839), (7, 273795977), (13, 147428603), (49, 39113711), (91, 21061229), (343, 5587673), (637, 3008747), (2401, 798239), (4459, 429821), (31213, 61403)]