21375172

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8389}}^1$

素因数の和:8420

約数の個数: 36

約数和(自身を含む): 46866540

約数和(自身を除く): 25491368

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8389, 16778, 33556, 58723, 109057, 117446, 218114, 234892, 411061, 436228, 763399, 822122, 1526798, 1644244, 3053596, 5343793, 10687586, 21375172]

約数ペア:

[(1, 21375172), (2, 10687586), (4, 5343793), (7, 3053596), (13, 1644244), (14, 1526798), (26, 822122), (28, 763399), (49, 436228), (52, 411061), (91, 234892), (98, 218114), (182, 117446), (196, 109057), (364, 58723), (637, 33556), (1274, 16778), (2548, 8389)]