21006128

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9181}}^1$

素因数の和:9213

約数の個数: 40

約数和(自身を含む): 47819856

約数和(自身を除く): 26813728

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 9181, 18362, 36724, 73448, 100991, 119353, 146896, 201982, 238706, 403964, 477412, 807928, 954824, 1312883, 1615856, 1909648, 2625766, 5251532, 10503064, 21006128]

約数ペア:

[(1, 21006128), (2, 10503064), (4, 5251532), (8, 2625766), (11, 1909648), (13, 1615856), (16, 1312883), (22, 954824), (26, 807928), (44, 477412), (52, 403964), (88, 238706), (104, 201982), (143, 146896), (176, 119353), (208, 100991), (286, 73448), (572, 36724), (1144, 18362), (2288, 9181)]