201520907

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2\times {\mathrm{1237}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 250828704

約数和(自身を除く): 49307797

約数列:

[1, 7, 17, 37, 119, 259, 629, 1237, 1369, 4403, 8659, 9583, 21029, 23273, 45769, 147203, 162911, 320383, 778073, 1693453, 5446511, 11854171, 28788701, 201520907]

約数ペア:

[(1, 201520907), (7, 28788701), (17, 11854171), (37, 5446511), (119, 1693453), (259, 778073), (629, 320383), (1237, 162911), (1369, 147203), (4403, 45769), (8659, 23273), (9583, 21029)]