18906976

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:308

約数の個数: 72

約数和(自身を含む): 43235640

約数和(自身を除く): 24328664

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 76, 88, 121, 152, 176, 209, 242, 257, 304, 352, 418, 484, 514, 608, 836, 968, 1028, 1672, 1936, 2056, 2299, 2827, 3344, 3872, 4112, 4598, 4883, 5654, 6688, 8224, 9196, 9766, 11308, 18392, 19532, 22616, 31097, 36784, 39064, 45232, 53713, 62194, 73568, 78128, 90464, 107426, 124388, 156256, 214852, 248776, 429704, 497552, 590843, 859408, 995104, 1181686, 1718816, 2363372, 4726744, 9453488, 18906976]

約数ペア:

[(1, 18906976), (2, 9453488), (4, 4726744), (8, 2363372), (11, 1718816), (16, 1181686), (19, 995104), (22, 859408), (32, 590843), (38, 497552), (44, 429704), (76, 248776), (88, 214852), (121, 156256), (152, 124388), (176, 107426), (209, 90464), (242, 78128), (257, 73568), (304, 62194), (352, 53713), (418, 45232), (484, 39064), (514, 36784), (608, 31097), (836, 22616), (968, 19532), (1028, 18392), (1672, 11308), (1936, 9766), (2056, 9196), (2299, 8224), (2827, 6688), (3344, 5654), (3872, 4883), (4112, 4598)]