20449928

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 41445180

約数和(自身を除く): 20995252

約数列:

[1, 2, 4, 8, 19, 38, 73, 76, 97, 146, 152, 194, 292, 361, 388, 584, 722, 776, 1387, 1444, 1843, 2774, 2888, 3686, 5548, 7081, 7372, 11096, 14162, 14744, 26353, 28324, 35017, 52706, 56648, 70034, 105412, 134539, 140068, 210824, 269078, 280136, 538156, 1076312, 2556241, 5112482, 10224964, 20449928]

約数ペア:

[(1, 20449928), (2, 10224964), (4, 5112482), (8, 2556241), (19, 1076312), (38, 538156), (73, 280136), (76, 269078), (97, 210824), (146, 140068), (152, 134539), (194, 105412), (292, 70034), (361, 56648), (388, 52706), (584, 35017), (722, 28324), (776, 26353), (1387, 14744), (1444, 14162), (1843, 11096), (2774, 7372), (2888, 7081), (3686, 5548)]