20974184

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28792216

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 79, 88, 154, 158, 308, 316, 431, 553, 616, 632, 862, 869, 1106, 1724, 1738, 2212, 3017, 3448, 3476, 4424, 4741, 6034, 6083, 6952, 9482, 12068, 12166, 18964, 24136, 24332, 33187, 34049, 37928, 48664, 66374, 68098, 132748, 136196, 238343, 265496, 272392, 374539, 476686, 749078, 953372, 1498156, 1906744, 2621773, 2996312, 5243546, 10487092, 20974184]

約数ペア:

[(1, 20974184), (2, 10487092), (4, 5243546), (7, 2996312), (8, 2621773), (11, 1906744), (14, 1498156), (22, 953372), (28, 749078), (44, 476686), (56, 374539), (77, 272392), (79, 265496), (88, 238343), (154, 136196), (158, 132748), (308, 68098), (316, 66374), (431, 48664), (553, 37928), (616, 34049), (632, 33187), (862, 24332), (869, 24136), (1106, 18964), (1724, 12166), (1738, 12068), (2212, 9482), (3017, 6952), (3448, 6083), (3476, 6034), (4424, 4741)]