21088964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 41604528

約数和(自身を除く): 20515564

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 97, 113, 148, 194, 226, 388, 452, 481, 962, 1261, 1469, 1924, 2522, 2938, 3589, 4181, 5044, 5876, 7178, 8362, 10961, 14356, 16724, 21922, 43844, 46657, 54353, 93314, 108706, 142493, 186628, 217412, 284986, 405557, 569972, 811114, 1622228, 5272241, 10544482, 21088964]

約数ペア:

[(1, 21088964), (2, 10544482), (4, 5272241), (13, 1622228), (26, 811114), (37, 569972), (52, 405557), (74, 284986), (97, 217412), (113, 186628), (148, 142493), (194, 108706), (226, 93314), (388, 54353), (452, 46657), (481, 43844), (962, 21922), (1261, 16724), (1469, 14356), (1924, 10961), (2522, 8362), (2938, 7178), (3589, 5876), (4181, 5044)]