21428092

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 47401200

約数和(自身を除く): 25973108

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 59, 68, 98, 109, 118, 119, 196, 218, 236, 238, 413, 436, 476, 763, 826, 833, 1003, 1526, 1652, 1666, 1853, 2006, 2891, 3052, 3332, 3706, 4012, 5341, 5782, 6431, 7021, 7412, 10682, 11564, 12862, 12971, 14042, 21364, 25724, 25942, 28084, 45017, 49147, 51884, 90034, 90797, 98294, 109327, 180068, 181594, 196588, 218654, 315119, 363188, 437308, 630238, 765289, 1260476, 1530578, 3061156, 5357023, 10714046, 21428092]

約数ペア:

[(1, 21428092), (2, 10714046), (4, 5357023), (7, 3061156), (14, 1530578), (17, 1260476), (28, 765289), (34, 630238), (49, 437308), (59, 363188), (68, 315119), (98, 218654), (109, 196588), (118, 181594), (119, 180068), (196, 109327), (218, 98294), (236, 90797), (238, 90034), (413, 51884), (436, 49147), (476, 45017), (763, 28084), (826, 25942), (833, 25724), (1003, 21364), (1526, 14042), (1652, 12971), (1666, 12862), (1853, 11564), (2006, 10682), (2891, 7412), (3052, 7021), (3332, 6431), (3706, 5782), (4012, 5341)]