20946255

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 38873088

約数和(自身を除く): 17926833

約数列:

[1, 3, 5, 11, 15, 33, 37, 47, 55, 73, 111, 141, 165, 185, 219, 235, 365, 407, 517, 555, 705, 803, 1095, 1221, 1551, 1739, 2035, 2409, 2585, 2701, 3431, 4015, 5217, 6105, 7755, 8103, 8695, 10293, 12045, 13505, 17155, 19129, 26085, 29711, 37741, 40515, 51465, 57387, 89133, 95645, 113223, 126947, 148555, 188705, 286935, 380841, 445665, 566115, 634735, 1396417, 1904205, 4189251, 6982085, 20946255]

約数ペア:

[(1, 20946255), (3, 6982085), (5, 4189251), (11, 1904205), (15, 1396417), (33, 634735), (37, 566115), (47, 445665), (55, 380841), (73, 286935), (111, 188705), (141, 148555), (165, 126947), (185, 113223), (219, 95645), (235, 89133), (365, 57387), (407, 51465), (517, 40515), (555, 37741), (705, 29711), (803, 26085), (1095, 19129), (1221, 17155), (1551, 13505), (1739, 12045), (2035, 10293), (2409, 8695), (2585, 8103), (2701, 7755), (3431, 6105), (4015, 5217)]