18971212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2663}}^1$

素因数の和:2817

約数の個数: 24

約数和(自身を含む): 36027936

約数和(自身を除く): 17056724

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2663, 3562, 5326, 7124, 10652, 34619, 69238, 138476, 364831, 729662, 1459324, 4742803, 9485606, 18971212]

約数ペア:

[(1, 18971212), (2, 9485606), (4, 4742803), (13, 1459324), (26, 729662), (52, 364831), (137, 138476), (274, 69238), (548, 34619), (1781, 10652), (2663, 7124), (3562, 5326)]