19906185

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16865655

約数列:

[1, 3, 5, 13, 15, 31, 37, 39, 65, 89, 93, 111, 155, 185, 195, 267, 403, 445, 465, 481, 555, 1147, 1157, 1209, 1335, 1443, 2015, 2405, 2759, 3293, 3441, 3471, 5735, 5785, 6045, 7215, 8277, 9879, 13795, 14911, 16465, 17205, 17355, 35867, 41385, 42809, 44733, 49395, 74555, 102083, 107601, 128427, 179335, 214045, 223665, 306249, 510415, 538005, 642135, 1327079, 1531245, 3981237, 6635395, 19906185]

約数ペア:

[(1, 19906185), (3, 6635395), (5, 3981237), (13, 1531245), (15, 1327079), (31, 642135), (37, 538005), (39, 510415), (65, 306249), (89, 223665), (93, 214045), (111, 179335), (155, 128427), (185, 107601), (195, 102083), (267, 74555), (403, 49395), (445, 44733), (465, 42809), (481, 41385), (555, 35867), (1147, 17355), (1157, 17205), (1209, 16465), (1335, 14911), (1443, 13795), (2015, 9879), (2405, 8277), (2759, 7215), (3293, 6045), (3441, 5785), (3471, 5735)]