18411978

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1723}}^1$

素因数の和:1878

約数の個数: 32

約数和(自身を含む): 39969216

約数和(自身を除く): 21557238

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 137, 274, 411, 822, 1723, 1781, 3446, 3562, 5169, 5343, 10338, 10686, 22399, 44798, 67197, 134394, 236051, 472102, 708153, 1416306, 3068663, 6137326, 9205989, 18411978]

約数ペア:

[(1, 18411978), (2, 9205989), (3, 6137326), (6, 3068663), (13, 1416306), (26, 708153), (39, 472102), (78, 236051), (137, 134394), (274, 67197), (411, 44798), (822, 22399), (1723, 10686), (1781, 10338), (3446, 5343), (3562, 5169)]