28154390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{709}}^1$

素因数の和:765

約数の個数: 48

約数和(自身を含む): 58430160

約数和(自身を除く): 30275770

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 361, 418, 709, 722, 1045, 1418, 1805, 2090, 3545, 3610, 3971, 7090, 7799, 7942, 13471, 15598, 19855, 26942, 38995, 39710, 67355, 77990, 134710, 148181, 255949, 296362, 511898, 740905, 1279745, 1481810, 2559490, 2815439, 5630878, 14077195, 28154390]

約数ペア:

[(1, 28154390), (2, 14077195), (5, 5630878), (10, 2815439), (11, 2559490), (19, 1481810), (22, 1279745), (38, 740905), (55, 511898), (95, 296362), (110, 255949), (190, 148181), (209, 134710), (361, 77990), (418, 67355), (709, 39710), (722, 38995), (1045, 26942), (1418, 19855), (1805, 15598), (2090, 13471), (3545, 7942), (3610, 7799), (3971, 7090)]