81781344

素因数分解:

$2^5\times 3^2\times {\mathrm{443}}^1\times {\mathrm{641}}^1$

素因数の和:1100

約数の個数: 72

約数和(自身を含む): 233454312

約数和(自身を除く): 151672968

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 443, 641, 886, 1282, 1329, 1772, 1923, 2564, 2658, 3544, 3846, 3987, 5128, 5316, 5769, 7088, 7692, 7974, 10256, 10632, 11538, 14176, 15384, 15948, 20512, 21264, 23076, 30768, 31896, 42528, 46152, 61536, 63792, 92304, 127584, 184608, 283963, 567926, 851889, 1135852, 1703778, 2271704, 2555667, 3407556, 4543408, 5111334, 6815112, 9086816, 10222668, 13630224, 20445336, 27260448, 40890672, 81781344]

約数ペア:

[(1, 81781344), (2, 40890672), (3, 27260448), (4, 20445336), (6, 13630224), (8, 10222668), (9, 9086816), (12, 6815112), (16, 5111334), (18, 4543408), (24, 3407556), (32, 2555667), (36, 2271704), (48, 1703778), (72, 1135852), (96, 851889), (144, 567926), (288, 283963), (443, 184608), (641, 127584), (886, 92304), (1282, 63792), (1329, 61536), (1772, 46152), (1923, 42528), (2564, 31896), (2658, 30768), (3544, 23076), (3846, 21264), (3987, 20512), (5128, 15948), (5316, 15384), (5769, 14176), (7088, 11538), (7692, 10632), (7974, 10256)]