20474545

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2647}}^1$

素因数の和:2689

約数の個数: 32

約数和(自身を含む): 32030208

約数和(自身を除く): 11555663

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 221, 455, 595, 1105, 1547, 2647, 7735, 13235, 18529, 34411, 44999, 92645, 172055, 224995, 240877, 314993, 584987, 1204385, 1574965, 2924935, 4094909, 20474545]

約数ペア:

[(1, 20474545), (5, 4094909), (7, 2924935), (13, 1574965), (17, 1204385), (35, 584987), (65, 314993), (85, 240877), (91, 224995), (119, 172055), (221, 92645), (455, 44999), (595, 34411), (1105, 18529), (1547, 13235), (2647, 7735)]