18355743

素因数分解:

$3^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:516

約数の個数: 36

約数和(自身を含む): 31210920

約数和(自身を除く): 12855177

約数列:

[1, 3, 7, 9, 21, 49, 63, 107, 147, 321, 389, 441, 749, 963, 1167, 2247, 2723, 3501, 5243, 6741, 8169, 15729, 19061, 24507, 41623, 47187, 57183, 124869, 171549, 291361, 374607, 874083, 2039527, 2622249, 6118581, 18355743]

約数ペア:

[(1, 18355743), (3, 6118581), (7, 2622249), (9, 2039527), (21, 874083), (49, 374607), (63, 291361), (107, 171549), (147, 124869), (321, 57183), (389, 47187), (441, 41623), (749, 24507), (963, 19061), (1167, 15729), (2247, 8169), (2723, 6741), (3501, 5243)]