21219996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 60641280

約数和(自身を除く): 39421284

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 31, 42, 58, 62, 84, 87, 93, 116, 124, 174, 186, 203, 217, 281, 348, 372, 406, 434, 562, 609, 651, 812, 843, 868, 899, 1124, 1218, 1302, 1686, 1798, 1967, 2436, 2604, 2697, 3372, 3596, 3934, 5394, 5901, 6293, 7868, 8149, 8711, 10788, 11802, 12586, 16298, 17422, 18879, 23604, 24447, 25172, 26133, 32596, 34844, 37758, 48894, 52266, 57043, 60977, 75516, 97788, 104532, 114086, 121954, 171129, 182931, 228172, 243908, 252619, 342258, 365862, 505238, 684516, 731724, 757857, 1010476, 1515714, 1768333, 3031428, 3536666, 5304999, 7073332, 10609998, 21219996]

約数ペア:

[(1, 21219996), (2, 10609998), (3, 7073332), (4, 5304999), (6, 3536666), (7, 3031428), (12, 1768333), (14, 1515714), (21, 1010476), (28, 757857), (29, 731724), (31, 684516), (42, 505238), (58, 365862), (62, 342258), (84, 252619), (87, 243908), (93, 228172), (116, 182931), (124, 171129), (174, 121954), (186, 114086), (203, 104532), (217, 97788), (281, 75516), (348, 60977), (372, 57043), (406, 52266), (434, 48894), (562, 37758), (609, 34844), (651, 32596), (812, 26133), (843, 25172), (868, 24447), (899, 23604), (1124, 18879), (1218, 17422), (1302, 16298), (1686, 12586), (1798, 11802), (1967, 10788), (2436, 8711), (2604, 8149), (2697, 7868), (3372, 6293), (3596, 5901), (3934, 5394)]