21563955

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1201}}^1$

素因数の和:1241

約数の個数: 64

約数和(自身を含む): 46156800

約数和(自身を除く): 24592845

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 95, 105, 133, 135, 171, 189, 285, 315, 399, 513, 665, 855, 945, 1197, 1201, 1995, 2565, 3591, 3603, 5985, 6005, 8407, 10809, 17955, 18015, 22819, 25221, 32427, 42035, 54045, 68457, 75663, 114095, 126105, 159733, 162135, 205371, 226989, 342285, 378315, 479199, 616113, 798665, 1026855, 1134945, 1437597, 2395995, 3080565, 4312791, 7187985, 21563955]

約数ペア:

[(1, 21563955), (3, 7187985), (5, 4312791), (7, 3080565), (9, 2395995), (15, 1437597), (19, 1134945), (21, 1026855), (27, 798665), (35, 616113), (45, 479199), (57, 378315), (63, 342285), (95, 226989), (105, 205371), (133, 162135), (135, 159733), (171, 126105), (189, 114095), (285, 75663), (315, 68457), (399, 54045), (513, 42035), (665, 32427), (855, 25221), (945, 22819), (1197, 18015), (1201, 17955), (1995, 10809), (2565, 8407), (3591, 6005), (3603, 5985)]