20178070101

素因数分解:

$3^2\times 7^2\times {\mathrm{45755261}}^1$

素因数の和:45755281

約数の個数: 18

約数和(自身を含む): 33904649142

約数和(自身を除く): 13726579041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45755261, 137265783, 320286827, 411797349, 960860481, 2242007789, 2882581443, 6726023367, 20178070101]

約数ペア:

[(1, 20178070101), (3, 6726023367), (7, 2882581443), (9, 2242007789), (21, 960860481), (49, 411797349), (63, 320286827), (147, 137265783), (441, 45755261)]