21036704

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{829}}^1$

素因数の和:913

約数の個数: 48

約数和(自身を含む): 45387720

約数和(自身を除く): 24351016

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 208, 244, 416, 488, 793, 829, 976, 1586, 1658, 1952, 3172, 3316, 6344, 6632, 10777, 12688, 13264, 21554, 25376, 26528, 43108, 50569, 86216, 101138, 172432, 202276, 344864, 404552, 657397, 809104, 1314794, 1618208, 2629588, 5259176, 10518352, 21036704]

約数ペア:

[(1, 21036704), (2, 10518352), (4, 5259176), (8, 2629588), (13, 1618208), (16, 1314794), (26, 809104), (32, 657397), (52, 404552), (61, 344864), (104, 202276), (122, 172432), (208, 101138), (244, 86216), (416, 50569), (488, 43108), (793, 26528), (829, 25376), (976, 21554), (1586, 13264), (1658, 12688), (1952, 10777), (3172, 6632), (3316, 6344)]