21073428

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 57447936

約数和(自身を除く): 36374508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 31, 36, 46, 62, 69, 92, 93, 124, 138, 186, 207, 276, 279, 372, 414, 558, 713, 821, 828, 1116, 1426, 1642, 2139, 2463, 2852, 3284, 4278, 4926, 6417, 7389, 8556, 9852, 12834, 14778, 18883, 25451, 25668, 29556, 37766, 50902, 56649, 75532, 76353, 101804, 113298, 152706, 169947, 226596, 229059, 305412, 339894, 458118, 585373, 679788, 916236, 1170746, 1756119, 2341492, 3512238, 5268357, 7024476, 10536714, 21073428]

約数ペア:

[(1, 21073428), (2, 10536714), (3, 7024476), (4, 5268357), (6, 3512238), (9, 2341492), (12, 1756119), (18, 1170746), (23, 916236), (31, 679788), (36, 585373), (46, 458118), (62, 339894), (69, 305412), (92, 229059), (93, 226596), (124, 169947), (138, 152706), (186, 113298), (207, 101804), (276, 76353), (279, 75532), (372, 56649), (414, 50902), (558, 37766), (713, 29556), (821, 25668), (828, 25451), (1116, 18883), (1426, 14778), (1642, 12834), (2139, 9852), (2463, 8556), (2852, 7389), (3284, 6417), (4278, 4926)]