21312452

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 25609948

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 59, 76, 97, 98, 118, 133, 194, 196, 236, 266, 388, 413, 532, 679, 826, 931, 1121, 1358, 1652, 1843, 1862, 2242, 2716, 2891, 3686, 3724, 4484, 4753, 5723, 5782, 7372, 7847, 9506, 11446, 11564, 12901, 15694, 19012, 22892, 25802, 31388, 40061, 51604, 54929, 80122, 90307, 108737, 109858, 160244, 180614, 217474, 219716, 280427, 361228, 434948, 560854, 761159, 1121708, 1522318, 3044636, 5328113, 10656226, 21312452]

約数ペア:

[(1, 21312452), (2, 10656226), (4, 5328113), (7, 3044636), (14, 1522318), (19, 1121708), (28, 761159), (38, 560854), (49, 434948), (59, 361228), (76, 280427), (97, 219716), (98, 217474), (118, 180614), (133, 160244), (194, 109858), (196, 108737), (236, 90307), (266, 80122), (388, 54929), (413, 51604), (532, 40061), (679, 31388), (826, 25802), (931, 22892), (1121, 19012), (1358, 15694), (1652, 12901), (1843, 11564), (1862, 11446), (2242, 9506), (2716, 7847), (2891, 7372), (3686, 5782), (3724, 5723), (4484, 4753)]