19721492

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^2\times {\mathrm{419}}^1$

素因数の和:512

約数の個数: 36

約数和(自身を含む): 40524960

約数和(自身を除く): 20803468

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 419, 574, 838, 1148, 1676, 1681, 2933, 3362, 5866, 6724, 11732, 11767, 17179, 23534, 34358, 47068, 68716, 120253, 240506, 481012, 704339, 1408678, 2817356, 4930373, 9860746, 19721492]

約数ペア:

[(1, 19721492), (2, 9860746), (4, 4930373), (7, 2817356), (14, 1408678), (28, 704339), (41, 481012), (82, 240506), (164, 120253), (287, 68716), (419, 47068), (574, 34358), (838, 23534), (1148, 17179), (1676, 11767), (1681, 11732), (2933, 6724), (3362, 5866)]