21905844

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 53813760

約数和(自身を除く): 31907916

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 139, 276, 278, 417, 556, 571, 834, 1142, 1668, 1713, 2284, 3197, 3426, 6394, 6852, 9591, 12788, 13133, 19182, 26266, 38364, 39399, 52532, 78798, 79369, 157596, 158738, 238107, 317476, 476214, 952428, 1825487, 3650974, 5476461, 7301948, 10952922, 21905844]

約数ペア:

[(1, 21905844), (2, 10952922), (3, 7301948), (4, 5476461), (6, 3650974), (12, 1825487), (23, 952428), (46, 476214), (69, 317476), (92, 238107), (138, 158738), (139, 157596), (276, 79369), (278, 78798), (417, 52532), (556, 39399), (571, 38364), (834, 26266), (1142, 19182), (1668, 13133), (1713, 12788), (2284, 9591), (3197, 6852), (3426, 6394)]