18911893

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2699}}^1$

素因数の和:2737

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 6943307

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 2699, 7007, 18893, 29689, 35087, 132251, 207823, 245609, 385957, 1454761, 1719263, 2701699, 18911893]

約数ペア:

[(1, 18911893), (7, 2701699), (11, 1719263), (13, 1454761), (49, 385957), (77, 245609), (91, 207823), (143, 132251), (539, 35087), (637, 29689), (1001, 18893), (2699, 7007)]