25658440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 61916400

約数和(自身を除く): 36257960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 97, 136, 170, 194, 340, 388, 389, 485, 680, 776, 778, 970, 1556, 1649, 1940, 1945, 3112, 3298, 3880, 3890, 6596, 6613, 7780, 8245, 13192, 13226, 15560, 16490, 26452, 32980, 33065, 37733, 52904, 65960, 66130, 75466, 132260, 150932, 188665, 264520, 301864, 377330, 641461, 754660, 1282922, 1509320, 2565844, 3207305, 5131688, 6414610, 12829220, 25658440]

約数ペア:

[(1, 25658440), (2, 12829220), (4, 6414610), (5, 5131688), (8, 3207305), (10, 2565844), (17, 1509320), (20, 1282922), (34, 754660), (40, 641461), (68, 377330), (85, 301864), (97, 264520), (136, 188665), (170, 150932), (194, 132260), (340, 75466), (388, 66130), (389, 65960), (485, 52904), (680, 37733), (776, 33065), (778, 32980), (970, 26452), (1556, 16490), (1649, 15560), (1940, 13226), (1945, 13192), (3112, 8245), (3298, 7780), (3880, 6613), (3890, 6596)]