20858775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{593}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 40068864

約数和(自身を除く): 19210089

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 67, 75, 105, 175, 201, 335, 469, 525, 593, 1005, 1407, 1675, 1779, 2345, 2965, 4151, 5025, 7035, 8895, 11725, 12453, 14825, 20755, 35175, 39731, 44475, 62265, 103775, 119193, 198655, 278117, 311325, 595965, 834351, 993275, 1390585, 2979825, 4171755, 6952925, 20858775]

約数ペア:

[(1, 20858775), (3, 6952925), (5, 4171755), (7, 2979825), (15, 1390585), (21, 993275), (25, 834351), (35, 595965), (67, 311325), (75, 278117), (105, 198655), (175, 119193), (201, 103775), (335, 62265), (469, 44475), (525, 39731), (593, 35175), (1005, 20755), (1407, 14825), (1675, 12453), (1779, 11725), (2345, 8895), (2965, 7035), (4151, 5025)]