20321650

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:507

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 20175758

約数列:

[1, 2, 5, 10, 23, 25, 41, 46, 50, 82, 115, 205, 230, 410, 431, 575, 862, 943, 1025, 1150, 1886, 2050, 2155, 4310, 4715, 9430, 9913, 10775, 17671, 19826, 21550, 23575, 35342, 47150, 49565, 88355, 99130, 176710, 247825, 406433, 441775, 495650, 812866, 883550, 2032165, 4064330, 10160825, 20321650]

約数ペア:

[(1, 20321650), (2, 10160825), (5, 4064330), (10, 2032165), (23, 883550), (25, 812866), (41, 495650), (46, 441775), (50, 406433), (82, 247825), (115, 176710), (205, 99130), (230, 88355), (410, 49565), (431, 47150), (575, 35342), (862, 23575), (943, 21550), (1025, 19826), (1150, 17671), (1886, 10775), (2050, 9913), (2155, 9430), (4310, 4715)]