21230175

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 37319040

約数和(自身を除く): 16088865

約数列:

[1, 3, 5, 15, 25, 29, 43, 75, 87, 129, 145, 215, 227, 435, 645, 681, 725, 1075, 1135, 1247, 2175, 3225, 3405, 3741, 5675, 6235, 6583, 9761, 17025, 18705, 19749, 29283, 31175, 32915, 48805, 93525, 98745, 146415, 164575, 244025, 283069, 493725, 732075, 849207, 1415345, 4246035, 7076725, 21230175]

約数ペア:

[(1, 21230175), (3, 7076725), (5, 4246035), (15, 1415345), (25, 849207), (29, 732075), (43, 493725), (75, 283069), (87, 244025), (129, 164575), (145, 146415), (215, 98745), (227, 93525), (435, 48805), (645, 32915), (681, 31175), (725, 29283), (1075, 19749), (1135, 18705), (1247, 17025), (2175, 9761), (3225, 6583), (3405, 6235), (3741, 5675)]