19968123

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{829}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 32296960

約数和(自身を除く): 12328837

約数列:

[1, 3, 7, 21, 31, 37, 93, 111, 217, 259, 651, 777, 829, 1147, 2487, 3441, 5803, 8029, 17409, 24087, 25699, 30673, 77097, 92019, 179893, 214711, 539679, 644133, 950863, 2852589, 6656041, 19968123]

約数ペア:

[(1, 19968123), (3, 6656041), (7, 2852589), (21, 950863), (31, 644133), (37, 539679), (93, 214711), (111, 179893), (217, 92019), (259, 77097), (651, 30673), (777, 25699), (829, 24087), (1147, 17409), (2487, 8029), (3441, 5803)]