19801852

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 41545728

約数和(自身を除く): 21743876

約数列:

[1, 2, 4, 7, 14, 28, 41, 47, 82, 94, 164, 188, 287, 329, 367, 574, 658, 734, 1148, 1316, 1468, 1927, 2569, 3854, 5138, 7708, 10276, 13489, 15047, 17249, 26978, 30094, 34498, 53956, 60188, 68996, 105329, 120743, 210658, 241486, 421316, 482972, 707209, 1414418, 2828836, 4950463, 9900926, 19801852]

約数ペア:

[(1, 19801852), (2, 9900926), (4, 4950463), (7, 2828836), (14, 1414418), (28, 707209), (41, 482972), (47, 421316), (82, 241486), (94, 210658), (164, 120743), (188, 105329), (287, 68996), (329, 60188), (367, 53956), (574, 34498), (658, 30094), (734, 26978), (1148, 17249), (1316, 15047), (1468, 13489), (1927, 10276), (2569, 7708), (3854, 5138)]