31386040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{569}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 81259200

約数和(自身を除く): 49873160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 569, 788, 985, 1138, 1379, 1576, 1970, 2276, 2758, 2845, 3940, 3983, 4552, 5516, 5690, 6895, 7880, 7966, 11032, 11380, 13790, 15932, 19915, 22760, 27580, 31864, 39830, 55160, 79660, 112093, 159320, 224186, 448372, 560465, 784651, 896744, 1120930, 1569302, 2241860, 3138604, 3923255, 4483720, 6277208, 7846510, 15693020, 31386040]

約数ペア:

[(1, 31386040), (2, 15693020), (4, 7846510), (5, 6277208), (7, 4483720), (8, 3923255), (10, 3138604), (14, 2241860), (20, 1569302), (28, 1120930), (35, 896744), (40, 784651), (56, 560465), (70, 448372), (140, 224186), (197, 159320), (280, 112093), (394, 79660), (569, 55160), (788, 39830), (985, 31864), (1138, 27580), (1379, 22760), (1576, 19915), (1970, 15932), (2276, 13790), (2758, 11380), (2845, 11032), (3940, 7966), (3983, 7880), (4552, 6895), (5516, 5690)]