20931638

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2447}}^1$

素因数の和:2516

約数の個数: 32

約数和(自身を含む): 39481344

約数和(自身を除く): 18549706

約数列:

[1, 2, 7, 13, 14, 26, 47, 91, 94, 182, 329, 611, 658, 1222, 2447, 4277, 4894, 8554, 17129, 31811, 34258, 63622, 115009, 222677, 230018, 445354, 805063, 1495117, 1610126, 2990234, 10465819, 20931638]

約数ペア:

[(1, 20931638), (2, 10465819), (7, 2990234), (13, 1610126), (14, 1495117), (26, 805063), (47, 445354), (91, 230018), (94, 222677), (182, 115009), (329, 63622), (611, 34258), (658, 31811), (1222, 17129), (2447, 8554), (4277, 4894)]