20872775

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1549}}^1$

素因数の和:1584

約数の個数: 36

約数和(自身を含む): 32866200

約数和(自身を除く): 11993425

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 385, 539, 1225, 1549, 1925, 2695, 7745, 10843, 13475, 17039, 38725, 54215, 75901, 85195, 119273, 271075, 379505, 425975, 596365, 834911, 1897525, 2981825, 4174555, 20872775]

約数ペア:

[(1, 20872775), (5, 4174555), (7, 2981825), (11, 1897525), (25, 834911), (35, 596365), (49, 425975), (55, 379505), (77, 271075), (175, 119273), (245, 85195), (275, 75901), (385, 54215), (539, 38725), (1225, 17039), (1549, 13475), (1925, 10843), (2695, 7745)]