19972212

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{443}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 53432736

約数和(自身を除く): 33460524

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 289, 442, 443, 578, 663, 867, 884, 886, 1156, 1326, 1329, 1734, 1772, 2652, 2658, 3468, 3757, 5316, 5759, 7514, 7531, 11271, 11518, 15028, 15062, 17277, 22542, 22593, 23036, 30124, 34554, 45084, 45186, 69108, 90372, 97903, 128027, 195806, 256054, 293709, 384081, 391612, 512108, 587418, 768162, 1174836, 1536324, 1664351, 3328702, 4993053, 6657404, 9986106, 19972212]

約数ペア:

[(1, 19972212), (2, 9986106), (3, 6657404), (4, 4993053), (6, 3328702), (12, 1664351), (13, 1536324), (17, 1174836), (26, 768162), (34, 587418), (39, 512108), (51, 391612), (52, 384081), (68, 293709), (78, 256054), (102, 195806), (156, 128027), (204, 97903), (221, 90372), (289, 69108), (442, 45186), (443, 45084), (578, 34554), (663, 30124), (867, 23036), (884, 22593), (886, 22542), (1156, 17277), (1326, 15062), (1329, 15028), (1734, 11518), (1772, 11271), (2652, 7531), (2658, 7514), (3468, 5759), (3757, 5316)]