19999210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1367}}^1$

素因数の和:1411

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 27278870

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 55, 70, 77, 95, 110, 133, 154, 190, 209, 266, 385, 418, 665, 770, 1045, 1330, 1367, 1463, 2090, 2734, 2926, 6835, 7315, 9569, 13670, 14630, 15037, 19138, 25973, 30074, 47845, 51946, 75185, 95690, 105259, 129865, 150370, 181811, 210518, 259730, 285703, 363622, 526295, 571406, 909055, 1052590, 1428515, 1818110, 1999921, 2857030, 3999842, 9999605, 19999210]

約数ペア:

[(1, 19999210), (2, 9999605), (5, 3999842), (7, 2857030), (10, 1999921), (11, 1818110), (14, 1428515), (19, 1052590), (22, 909055), (35, 571406), (38, 526295), (55, 363622), (70, 285703), (77, 259730), (95, 210518), (110, 181811), (133, 150370), (154, 129865), (190, 105259), (209, 95690), (266, 75185), (385, 51946), (418, 47845), (665, 30074), (770, 25973), (1045, 19138), (1330, 15037), (1367, 14630), (1463, 13670), (2090, 9569), (2734, 7315), (2926, 6835)]