19871649

素因数分解:

$3^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{347}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 34360128

約数和(自身を除く): 14488479

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 101, 189, 303, 347, 567, 707, 909, 1041, 2121, 2429, 2727, 3123, 6363, 7287, 8181, 9369, 19089, 21861, 28107, 35047, 57267, 65583, 105141, 196749, 245329, 315423, 735987, 946269, 2207961, 2838807, 6623883, 19871649]

約数ペア:

[(1, 19871649), (3, 6623883), (7, 2838807), (9, 2207961), (21, 946269), (27, 735987), (63, 315423), (81, 245329), (101, 196749), (189, 105141), (303, 65583), (347, 57267), (567, 35047), (707, 28107), (909, 21861), (1041, 19089), (2121, 9369), (2429, 8181), (2727, 7287), (3123, 6363)]