20199090905

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{647}}^1\times {\mathrm{1613}}^1$

素因数の和:2358

約数の個数: 48

約数和(自身を含む): 28615057920

約数和(自身を除く): 8415967015

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 647, 1613, 2765, 3235, 3871, 4529, 8065, 11291, 19355, 22645, 31703, 51113, 56455, 79037, 127427, 158515, 255565, 357791, 395185, 637135, 891989, 1043611, 1788955, 2504537, 4459945, 5218055, 6243923, 7305277, 12522685, 31219615, 36526385, 51136939, 82445269, 255684695, 412226345, 577116883, 2885584415, 4039818181, 20199090905]

約数ペア:

[(1, 20199090905), (5, 4039818181), (7, 2885584415), (35, 577116883), (49, 412226345), (79, 255684695), (245, 82445269), (395, 51136939), (553, 36526385), (647, 31219615), (1613, 12522685), (2765, 7305277), (3235, 6243923), (3871, 5218055), (4529, 4459945), (8065, 2504537), (11291, 1788955), (19355, 1043611), (22645, 891989), (31703, 637135), (51113, 395185), (56455, 357791), (79037, 255565), (127427, 158515)]