20676128

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 24139552

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 151, 176, 302, 352, 389, 604, 778, 1208, 1556, 1661, 2416, 3112, 3322, 4279, 4832, 6224, 6644, 8558, 12448, 13288, 17116, 26576, 34232, 53152, 58739, 68464, 117478, 136928, 234956, 469912, 646129, 939824, 1292258, 1879648, 2584516, 5169032, 10338064, 20676128]

約数ペア:

[(1, 20676128), (2, 10338064), (4, 5169032), (8, 2584516), (11, 1879648), (16, 1292258), (22, 939824), (32, 646129), (44, 469912), (88, 234956), (151, 136928), (176, 117478), (302, 68464), (352, 58739), (389, 53152), (604, 34232), (778, 26576), (1208, 17116), (1556, 13288), (1661, 12448), (2416, 8558), (3112, 6644), (3322, 6224), (4279, 4832)]