21654770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:227

約数の個数: 48

約数和(自身を含む): 42439680

約数和(自身を除く): 20784910

約数列:

[1, 2, 5, 10, 17, 34, 59, 85, 118, 127, 170, 254, 289, 295, 578, 590, 635, 1003, 1270, 1445, 2006, 2159, 2890, 4318, 5015, 7493, 10030, 10795, 14986, 17051, 21590, 34102, 36703, 37465, 73406, 74930, 85255, 127381, 170510, 183515, 254762, 367030, 636905, 1273810, 2165477, 4330954, 10827385, 21654770]

約数ペア:

[(1, 21654770), (2, 10827385), (5, 4330954), (10, 2165477), (17, 1273810), (34, 636905), (59, 367030), (85, 254762), (118, 183515), (127, 170510), (170, 127381), (254, 85255), (289, 74930), (295, 73406), (578, 37465), (590, 36703), (635, 34102), (1003, 21590), (1270, 17051), (1445, 14986), (2006, 10795), (2159, 10030), (2890, 7493), (4318, 5015)]