21657130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23132630

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 59, 71, 94, 110, 118, 142, 235, 295, 355, 470, 517, 590, 649, 710, 781, 1034, 1298, 1562, 2585, 2773, 3245, 3337, 3905, 4189, 5170, 5546, 6490, 6674, 7810, 8378, 13865, 16685, 20945, 27730, 30503, 33370, 36707, 41890, 46079, 61006, 73414, 92158, 152515, 183535, 196883, 230395, 305030, 367070, 393766, 460790, 984415, 1968830, 2165713, 4331426, 10828565, 21657130]

約数ペア:

[(1, 21657130), (2, 10828565), (5, 4331426), (10, 2165713), (11, 1968830), (22, 984415), (47, 460790), (55, 393766), (59, 367070), (71, 305030), (94, 230395), (110, 196883), (118, 183535), (142, 152515), (235, 92158), (295, 73414), (355, 61006), (470, 46079), (517, 41890), (590, 36707), (649, 33370), (710, 30503), (781, 27730), (1034, 20945), (1298, 16685), (1562, 13865), (2585, 8378), (2773, 7810), (3245, 6674), (3337, 6490), (3905, 5546), (4189, 5170)]