19040021

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{827}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 7667947

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 827, 1001, 1771, 2093, 3289, 5789, 9097, 10751, 19021, 23023, 63679, 75257, 118261, 133147, 209231, 247273, 827827, 1464617, 1730911, 2720003, 19040021]

約数ペア:

[(1, 19040021), (7, 2720003), (11, 1730911), (13, 1464617), (23, 827827), (77, 247273), (91, 209231), (143, 133147), (161, 118261), (253, 75257), (299, 63679), (827, 23023), (1001, 19021), (1771, 10751), (2093, 9097), (3289, 5789)]