21185684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 43135680

約数和(自身を除く): 21949996

約数列:

[1, 2, 4, 13, 19, 26, 38, 41, 52, 76, 82, 164, 247, 494, 523, 533, 779, 988, 1046, 1066, 1558, 2092, 2132, 3116, 6799, 9937, 10127, 13598, 19874, 20254, 21443, 27196, 39748, 40508, 42886, 85772, 129181, 258362, 278759, 407417, 516724, 557518, 814834, 1115036, 1629668, 5296421, 10592842, 21185684]

約数ペア:

[(1, 21185684), (2, 10592842), (4, 5296421), (13, 1629668), (19, 1115036), (26, 814834), (38, 557518), (41, 516724), (52, 407417), (76, 278759), (82, 258362), (164, 129181), (247, 85772), (494, 42886), (523, 40508), (533, 39748), (779, 27196), (988, 21443), (1046, 20254), (1066, 19874), (1558, 13598), (2092, 10127), (2132, 9937), (3116, 6799)]