20515908

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 61133184

約数和(自身を除く): 40617276

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 37, 41, 42, 46, 49, 69, 74, 82, 84, 92, 98, 111, 123, 138, 147, 148, 161, 164, 196, 222, 246, 259, 276, 287, 294, 322, 444, 483, 492, 518, 574, 588, 644, 777, 851, 861, 943, 966, 1036, 1127, 1148, 1517, 1554, 1702, 1722, 1813, 1886, 1932, 2009, 2254, 2553, 2829, 3034, 3108, 3381, 3404, 3444, 3626, 3772, 4018, 4508, 4551, 5106, 5439, 5658, 5957, 6027, 6068, 6601, 6762, 7252, 8036, 9102, 10212, 10619, 10878, 11316, 11914, 12054, 13202, 13524, 17871, 18204, 19803, 21238, 21756, 23828, 24108, 26404, 31857, 34891, 35742, 39606, 41699, 42476, 46207, 63714, 69782, 71484, 74333, 79212, 83398, 92414, 104673, 125097, 127428, 138621, 139564, 148666, 166796, 184828, 209346, 222999, 244237, 250194, 277242, 297332, 418692, 445998, 488474, 500388, 554484, 732711, 891996, 976948, 1465422, 1709659, 2930844, 3419318, 5128977, 6838636, 10257954, 20515908]

約数ペア:

[(1, 20515908), (2, 10257954), (3, 6838636), (4, 5128977), (6, 3419318), (7, 2930844), (12, 1709659), (14, 1465422), (21, 976948), (23, 891996), (28, 732711), (37, 554484), (41, 500388), (42, 488474), (46, 445998), (49, 418692), (69, 297332), (74, 277242), (82, 250194), (84, 244237), (92, 222999), (98, 209346), (111, 184828), (123, 166796), (138, 148666), (147, 139564), (148, 138621), (161, 127428), (164, 125097), (196, 104673), (222, 92414), (246, 83398), (259, 79212), (276, 74333), (287, 71484), (294, 69782), (322, 63714), (444, 46207), (483, 42476), (492, 41699), (518, 39606), (574, 35742), (588, 34891), (644, 31857), (777, 26404), (851, 24108), (861, 23828), (943, 21756), (966, 21238), (1036, 19803), (1127, 18204), (1148, 17871), (1517, 13524), (1554, 13202), (1702, 12054), (1722, 11914), (1813, 11316), (1886, 10878), (1932, 10619), (2009, 10212), (2254, 9102), (2553, 8036), (2829, 7252), (3034, 6762), (3108, 6601), (3381, 6068), (3404, 6027), (3444, 5957), (3626, 5658), (3772, 5439), (4018, 5106), (4508, 4551)]