12690440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 33212160

約数和(自身を除く): 20521720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 743, 854, 1220, 1486, 1708, 2135, 2440, 2972, 3416, 3715, 4270, 5201, 5944, 7430, 8540, 10402, 14860, 17080, 20804, 26005, 29720, 41608, 45323, 52010, 90646, 104020, 181292, 208040, 226615, 317261, 362584, 453230, 634522, 906460, 1269044, 1586305, 1812920, 2538088, 3172610, 6345220, 12690440]

約数ペア:

[(1, 12690440), (2, 6345220), (4, 3172610), (5, 2538088), (7, 1812920), (8, 1586305), (10, 1269044), (14, 906460), (20, 634522), (28, 453230), (35, 362584), (40, 317261), (56, 226615), (61, 208040), (70, 181292), (122, 104020), (140, 90646), (244, 52010), (280, 45323), (305, 41608), (427, 29720), (488, 26005), (610, 20804), (743, 17080), (854, 14860), (1220, 10402), (1486, 8540), (1708, 7430), (2135, 5944), (2440, 5201), (2972, 4270), (3416, 3715)]