21601755

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{22859}}^1$

素因数の和:22880

約数の個数: 32

約数和(自身を含む): 43891200

約数和(自身を除く): 22289445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 22859, 68577, 114295, 160013, 205731, 342885, 480039, 617193, 800065, 1028655, 1440117, 2400195, 3085965, 4320351, 7200585, 21601755]

約数ペア:

[(1, 21601755), (3, 7200585), (5, 4320351), (7, 3085965), (9, 2400195), (15, 1440117), (21, 1028655), (27, 800065), (35, 617193), (45, 480039), (63, 342885), (105, 205731), (135, 160013), (189, 114295), (315, 68577), (945, 22859)]