18994352

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1723}}^1$

素因数の和:1797

約数の個数: 40

約数和(自身を含む): 40403664

約数和(自身を除く): 21409312

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 1723, 2756, 3446, 5512, 6892, 11024, 13784, 22399, 27568, 44798, 89596, 91319, 179192, 182638, 358384, 365276, 730552, 1187147, 1461104, 2374294, 4748588, 9497176, 18994352]

約数ペア:

[(1, 18994352), (2, 9497176), (4, 4748588), (8, 2374294), (13, 1461104), (16, 1187147), (26, 730552), (52, 365276), (53, 358384), (104, 182638), (106, 179192), (208, 91319), (212, 89596), (424, 44798), (689, 27568), (848, 22399), (1378, 13784), (1723, 11024), (2756, 6892), (3446, 5512)]