21386748

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2557}}^1$

素因数の和:2622

約数の個数: 48

約数和(自身を含む): 54147744

約数和(自身を除く): 32760996

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 41, 51, 68, 82, 102, 123, 164, 204, 246, 492, 697, 1394, 2091, 2557, 2788, 4182, 5114, 7671, 8364, 10228, 15342, 30684, 43469, 86938, 104837, 130407, 173876, 209674, 260814, 314511, 419348, 521628, 629022, 1258044, 1782229, 3564458, 5346687, 7128916, 10693374, 21386748]

約数ペア:

[(1, 21386748), (2, 10693374), (3, 7128916), (4, 5346687), (6, 3564458), (12, 1782229), (17, 1258044), (34, 629022), (41, 521628), (51, 419348), (68, 314511), (82, 260814), (102, 209674), (123, 173876), (164, 130407), (204, 104837), (246, 86938), (492, 43469), (697, 30684), (1394, 15342), (2091, 10228), (2557, 8364), (2788, 7671), (4182, 5114)]