25648280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{659}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 66528000

約数和(自身を除く): 40879720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 659, 695, 973, 1112, 1318, 1390, 1946, 2636, 2780, 3295, 3892, 4613, 4865, 5272, 5560, 6590, 7784, 9226, 9730, 13180, 18452, 19460, 23065, 26360, 36904, 38920, 46130, 91601, 92260, 183202, 184520, 366404, 458005, 641207, 732808, 916010, 1282414, 1832020, 2564828, 3206035, 3664040, 5129656, 6412070, 12824140, 25648280]

約数ペア:

[(1, 25648280), (2, 12824140), (4, 6412070), (5, 5129656), (7, 3664040), (8, 3206035), (10, 2564828), (14, 1832020), (20, 1282414), (28, 916010), (35, 732808), (40, 641207), (56, 458005), (70, 366404), (139, 184520), (140, 183202), (278, 92260), (280, 91601), (556, 46130), (659, 38920), (695, 36904), (973, 26360), (1112, 23065), (1318, 19460), (1390, 18452), (1946, 13180), (2636, 9730), (2780, 9226), (3295, 7784), (3892, 6590), (4613, 5560), (4865, 5272)]