21356466

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 47139840

約数和(自身を除く): 25783374

約数列:

[1, 2, 3, 6, 23, 43, 46, 59, 61, 69, 86, 118, 122, 129, 138, 177, 183, 258, 354, 366, 989, 1357, 1403, 1978, 2537, 2623, 2714, 2806, 2967, 3599, 4071, 4209, 5074, 5246, 5934, 7198, 7611, 7869, 8142, 8418, 10797, 15222, 15738, 21594, 58351, 60329, 82777, 116702, 120658, 154757, 165554, 175053, 180987, 248331, 309514, 350106, 361974, 464271, 496662, 928542, 3559411, 7118822, 10678233, 21356466]

約数ペア:

[(1, 21356466), (2, 10678233), (3, 7118822), (6, 3559411), (23, 928542), (43, 496662), (46, 464271), (59, 361974), (61, 350106), (69, 309514), (86, 248331), (118, 180987), (122, 175053), (129, 165554), (138, 154757), (177, 120658), (183, 116702), (258, 82777), (354, 60329), (366, 58351), (989, 21594), (1357, 15738), (1403, 15222), (1978, 10797), (2537, 8418), (2623, 8142), (2714, 7869), (2806, 7611), (2967, 7198), (3599, 5934), (4071, 5246), (4209, 5074)]