21765224

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 46717440

約数和(自身を除く): 24952216

約数列:

[1, 2, 4, 8, 13, 26, 31, 43, 52, 62, 86, 104, 124, 157, 172, 248, 314, 344, 403, 559, 628, 806, 1118, 1256, 1333, 1612, 2041, 2236, 2666, 3224, 4082, 4472, 4867, 5332, 6751, 8164, 9734, 10664, 13502, 16328, 17329, 19468, 27004, 34658, 38936, 54008, 63271, 69316, 87763, 126542, 138632, 175526, 209281, 253084, 351052, 418562, 506168, 702104, 837124, 1674248, 2720653, 5441306, 10882612, 21765224]

約数ペア:

[(1, 21765224), (2, 10882612), (4, 5441306), (8, 2720653), (13, 1674248), (26, 837124), (31, 702104), (43, 506168), (52, 418562), (62, 351052), (86, 253084), (104, 209281), (124, 175526), (157, 138632), (172, 126542), (248, 87763), (314, 69316), (344, 63271), (403, 54008), (559, 38936), (628, 34658), (806, 27004), (1118, 19468), (1256, 17329), (1333, 16328), (1612, 13502), (2041, 10664), (2236, 9734), (2666, 8164), (3224, 6751), (4082, 5332), (4472, 4867)]