20210399

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 25214976

約数和(自身を除く): 5004577

約数列:

[1, 11, 17, 23, 37, 127, 187, 253, 391, 407, 629, 851, 1397, 2159, 2921, 4301, 4699, 6919, 9361, 14467, 23749, 32131, 49657, 51689, 79883, 108077, 159137, 546227, 878713, 1188847, 1837309, 20210399]

約数ペア:

[(1, 20210399), (11, 1837309), (17, 1188847), (23, 878713), (37, 546227), (127, 159137), (187, 108077), (253, 79883), (391, 51689), (407, 49657), (629, 32131), (851, 23749), (1397, 14467), (2159, 9361), (2921, 6919), (4301, 4699)]