21221532

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13709}}^1$

素因数の和:13762

約数の個数: 36

約数和(自身を含む): 54894840

約数和(自身を除く): 33673308

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13709, 27418, 41127, 54836, 82254, 123381, 164508, 246762, 493524, 589487, 1178974, 1768461, 2357948, 3536922, 5305383, 7073844, 10610766, 21221532]

約数ペア:

[(1, 21221532), (2, 10610766), (3, 7073844), (4, 5305383), (6, 3536922), (9, 2357948), (12, 1768461), (18, 1178974), (36, 589487), (43, 493524), (86, 246762), (129, 164508), (172, 123381), (258, 82254), (387, 54836), (516, 41127), (774, 27418), (1548, 13709)]