21105688

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{631}}^1$

素因数の和:787

約数の個数: 32

約数和(自身を含む): 41067360

約数和(自身を除く): 19961672

約数列:

[1, 2, 4, 8, 37, 74, 113, 148, 226, 296, 452, 631, 904, 1262, 2524, 4181, 5048, 8362, 16724, 23347, 33448, 46694, 71303, 93388, 142606, 186776, 285212, 570424, 2638211, 5276422, 10552844, 21105688]

約数ペア:

[(1, 21105688), (2, 10552844), (4, 5276422), (8, 2638211), (37, 570424), (74, 285212), (113, 186776), (148, 142606), (226, 93388), (296, 71303), (452, 46694), (631, 33448), (904, 23347), (1262, 16724), (2524, 8362), (4181, 5048)]