20576031

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 13897569

約数列:

[1, 3, 7, 19, 21, 49, 53, 57, 133, 139, 147, 159, 371, 399, 417, 931, 973, 1007, 1113, 2597, 2641, 2793, 2919, 3021, 6811, 7049, 7367, 7791, 7923, 18487, 20433, 21147, 22101, 49343, 51569, 55461, 129409, 139973, 148029, 154707, 360983, 388227, 419919, 979811, 1082949, 2939433, 6858677, 20576031]

約数ペア:

[(1, 20576031), (3, 6858677), (7, 2939433), (19, 1082949), (21, 979811), (49, 419919), (53, 388227), (57, 360983), (133, 154707), (139, 148029), (147, 139973), (159, 129409), (371, 55461), (399, 51569), (417, 49343), (931, 22101), (973, 21147), (1007, 20433), (1113, 18487), (2597, 7923), (2641, 7791), (2793, 7367), (2919, 7049), (3021, 6811)]