205419795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{283}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 390856704

約数和(自身を除く): 185436909

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 223, 283, 465, 651, 669, 849, 1085, 1115, 1415, 1561, 1981, 3255, 3345, 4245, 4683, 5943, 6913, 7805, 8773, 9905, 20739, 23415, 26319, 29715, 34565, 43865, 48391, 61411, 63109, 103695, 131595, 145173, 184233, 189327, 241955, 307055, 315545, 441763, 725865, 921165, 946635, 1325289, 1956379, 2208815, 5869137, 6626445, 9781895, 13694653, 29345685, 41083959, 68473265, 205419795]

約数ペア:

[(1, 205419795), (3, 68473265), (5, 41083959), (7, 29345685), (15, 13694653), (21, 9781895), (31, 6626445), (35, 5869137), (93, 2208815), (105, 1956379), (155, 1325289), (217, 946635), (223, 921165), (283, 725865), (465, 441763), (651, 315545), (669, 307055), (849, 241955), (1085, 189327), (1115, 184233), (1415, 145173), (1561, 131595), (1981, 103695), (3255, 63109), (3345, 61411), (4245, 48391), (4683, 43865), (5943, 34565), (6913, 29715), (7805, 26319), (8773, 23415), (9905, 20739)]