720409310

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^2\times {\mathrm{461}}^1$

素因数の和:641

約数の個数: 48

約数和(自身を含む): 1360630656

約数和(自身を除く): 640221346

約数列:

[1, 2, 5, 10, 31, 62, 71, 142, 155, 310, 355, 461, 710, 922, 2201, 2305, 4402, 4610, 5041, 10082, 11005, 14291, 22010, 25205, 28582, 32731, 50410, 65462, 71455, 142910, 156271, 163655, 312542, 327310, 781355, 1014661, 1562710, 2029322, 2323901, 4647802, 5073305, 10146610, 11619505, 23239010, 72040931, 144081862, 360204655, 720409310]

約数ペア:

[(1, 720409310), (2, 360204655), (5, 144081862), (10, 72040931), (31, 23239010), (62, 11619505), (71, 10146610), (142, 5073305), (155, 4647802), (310, 2323901), (355, 2029322), (461, 1562710), (710, 1014661), (922, 781355), (2201, 327310), (2305, 312542), (4402, 163655), (4610, 156271), (5041, 142910), (10082, 71455), (11005, 65462), (14291, 50410), (22010, 32731), (25205, 28582)]