21497333

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 6081547

約数列:

[1, 11, 13, 17, 37, 143, 187, 221, 239, 407, 481, 629, 2431, 2629, 3107, 4063, 5291, 6919, 8177, 8843, 34177, 44693, 52819, 89947, 97273, 114959, 150331, 581009, 1264549, 1653641, 1954303, 21497333]

約数ペア:

[(1, 21497333), (11, 1954303), (13, 1653641), (17, 1264549), (37, 581009), (143, 150331), (187, 114959), (221, 97273), (239, 89947), (407, 52819), (481, 44693), (629, 34177), (2431, 8843), (2629, 8177), (3107, 6919), (4063, 5291)]