21879560

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 29269240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 73, 118, 127, 146, 236, 254, 292, 295, 365, 472, 508, 584, 590, 635, 730, 1016, 1180, 1270, 1460, 2360, 2540, 2920, 4307, 5080, 7493, 8614, 9271, 14986, 17228, 18542, 21535, 29972, 34456, 37084, 37465, 43070, 46355, 59944, 74168, 74930, 86140, 92710, 149860, 172280, 185420, 299720, 370840, 546989, 1093978, 2187956, 2734945, 4375912, 5469890, 10939780, 21879560]

約数ペア:

[(1, 21879560), (2, 10939780), (4, 5469890), (5, 4375912), (8, 2734945), (10, 2187956), (20, 1093978), (40, 546989), (59, 370840), (73, 299720), (118, 185420), (127, 172280), (146, 149860), (236, 92710), (254, 86140), (292, 74930), (295, 74168), (365, 59944), (472, 46355), (508, 43070), (584, 37465), (590, 37084), (635, 34456), (730, 29972), (1016, 21535), (1180, 18542), (1270, 17228), (1460, 14986), (2360, 9271), (2540, 8614), (2920, 7493), (4307, 5080)]