20752888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 44593920

約数和(自身を除く): 23841032

約数列:

[1, 2, 4, 8, 13, 26, 31, 41, 52, 62, 82, 104, 124, 157, 164, 248, 314, 328, 403, 533, 628, 806, 1066, 1256, 1271, 1612, 2041, 2132, 2542, 3224, 4082, 4264, 4867, 5084, 6437, 8164, 9734, 10168, 12874, 16328, 16523, 19468, 25748, 33046, 38936, 51496, 63271, 66092, 83681, 126542, 132184, 167362, 199547, 253084, 334724, 399094, 506168, 669448, 798188, 1596376, 2594111, 5188222, 10376444, 20752888]

約数ペア:

[(1, 20752888), (2, 10376444), (4, 5188222), (8, 2594111), (13, 1596376), (26, 798188), (31, 669448), (41, 506168), (52, 399094), (62, 334724), (82, 253084), (104, 199547), (124, 167362), (157, 132184), (164, 126542), (248, 83681), (314, 66092), (328, 63271), (403, 51496), (533, 38936), (628, 33046), (806, 25748), (1066, 19468), (1256, 16523), (1271, 16328), (1612, 12874), (2041, 10168), (2132, 9734), (2542, 8164), (3224, 6437), (4082, 5084), (4264, 4867)]