78472980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2213}}^1$

素因数の和:2425

約数の個数: 72

約数和(自身を含む): 239351112

約数和(自身を除く): 160878132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 985, 1182, 1773, 1970, 2213, 2364, 2955, 3546, 3940, 4426, 5910, 6639, 7092, 8852, 8865, 11065, 11820, 13278, 17730, 19917, 22130, 26556, 33195, 35460, 39834, 44260, 66390, 79668, 99585, 132780, 199170, 398340, 435961, 871922, 1307883, 1743844, 2179805, 2615766, 3923649, 4359610, 5231532, 6539415, 7847298, 8719220, 13078830, 15694596, 19618245, 26157660, 39236490, 78472980]

約数ペア:

[(1, 78472980), (2, 39236490), (3, 26157660), (4, 19618245), (5, 15694596), (6, 13078830), (9, 8719220), (10, 7847298), (12, 6539415), (15, 5231532), (18, 4359610), (20, 3923649), (30, 2615766), (36, 2179805), (45, 1743844), (60, 1307883), (90, 871922), (180, 435961), (197, 398340), (394, 199170), (591, 132780), (788, 99585), (985, 79668), (1182, 66390), (1773, 44260), (1970, 39834), (2213, 35460), (2364, 33195), (2955, 26556), (3546, 22130), (3940, 19917), (4426, 17730), (5910, 13278), (6639, 11820), (7092, 11065), (8852, 8865)]