21812252

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 49488768

約数和(自身を除く): 27676516

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 67, 77, 98, 134, 151, 154, 196, 268, 302, 308, 469, 539, 604, 737, 938, 1057, 1078, 1474, 1661, 1876, 2114, 2156, 2948, 3283, 3322, 4228, 5159, 6566, 6644, 7399, 10117, 10318, 11627, 13132, 14798, 20234, 20636, 23254, 29596, 36113, 40468, 46508, 70819, 72226, 81389, 111287, 141638, 144452, 162778, 222574, 283276, 325556, 445148, 495733, 779009, 991466, 1558018, 1982932, 3116036, 5453063, 10906126, 21812252]

約数ペア:

[(1, 21812252), (2, 10906126), (4, 5453063), (7, 3116036), (11, 1982932), (14, 1558018), (22, 991466), (28, 779009), (44, 495733), (49, 445148), (67, 325556), (77, 283276), (98, 222574), (134, 162778), (151, 144452), (154, 141638), (196, 111287), (268, 81389), (302, 72226), (308, 70819), (469, 46508), (539, 40468), (604, 36113), (737, 29596), (938, 23254), (1057, 20636), (1078, 20234), (1474, 14798), (1661, 13132), (1876, 11627), (2114, 10318), (2156, 10117), (2948, 7399), (3283, 6644), (3322, 6566), (4228, 5159)]