20658008

素因数分解:

$2^3\times 7^2\times {\mathrm{151}}^1\times {\mathrm{349}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 45486000

約数和(自身を除く): 24827992

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 151, 196, 302, 349, 392, 604, 698, 1057, 1208, 1396, 2114, 2443, 2792, 4228, 4886, 7399, 8456, 9772, 14798, 17101, 19544, 29596, 34202, 52699, 59192, 68404, 105398, 136808, 210796, 368893, 421592, 737786, 1475572, 2582251, 2951144, 5164502, 10329004, 20658008]

約数ペア:

[(1, 20658008), (2, 10329004), (4, 5164502), (7, 2951144), (8, 2582251), (14, 1475572), (28, 737786), (49, 421592), (56, 368893), (98, 210796), (151, 136808), (196, 105398), (302, 68404), (349, 59192), (392, 52699), (604, 34202), (698, 29596), (1057, 19544), (1208, 17101), (1396, 14798), (2114, 9772), (2443, 8456), (2792, 7399), (4228, 4886)]