81522540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 216

約数和(自身を含む): 287567280

約数和(自身を除く): 206044740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 121, 132, 165, 171, 180, 190, 197, 198, 209, 220, 228, 242, 285, 330, 342, 363, 380, 394, 396, 418, 484, 495, 570, 591, 605, 627, 660, 684, 726, 788, 836, 855, 985, 990, 1045, 1089, 1140, 1182, 1210, 1254, 1452, 1710, 1773, 1815, 1881, 1970, 1980, 2090, 2167, 2178, 2299, 2364, 2420, 2508, 2955, 3135, 3420, 3546, 3630, 3743, 3762, 3940, 4180, 4334, 4356, 4598, 5445, 5910, 6270, 6501, 6897, 7092, 7260, 7486, 7524, 8668, 8865, 9196, 9405, 10835, 10890, 11229, 11495, 11820, 12540, 13002, 13794, 14972, 17730, 18715, 18810, 19503, 20691, 21670, 21780, 22458, 22990, 23837, 26004, 27588, 32505, 33687, 34485, 35460, 37430, 37620, 39006, 41173, 41382, 43340, 44916, 45980, 47674, 56145, 65010, 67374, 68970, 71511, 74860, 78012, 82346, 82764, 95348, 97515, 103455, 112290, 119185, 123519, 130020, 134748, 137940, 143022, 164692, 168435, 195030, 205865, 206910, 214533, 224580, 238370, 247038, 286044, 336870, 357555, 370557, 390060, 411730, 413820, 429066, 452903, 476740, 494076, 617595, 673740, 715110, 741114, 823460, 858132, 905806, 1072665, 1235190, 1358709, 1430220, 1482228, 1811612, 1852785, 2145330, 2264515, 2470380, 2717418, 3705570, 4076127, 4290660, 4529030, 5434836, 6793545, 7411140, 8152254, 9058060, 13587090, 16304508, 20380635, 27174180, 40761270, 81522540]

約数ペア:

[(1, 81522540), (2, 40761270), (3, 27174180), (4, 20380635), (5, 16304508), (6, 13587090), (9, 9058060), (10, 8152254), (11, 7411140), (12, 6793545), (15, 5434836), (18, 4529030), (19, 4290660), (20, 4076127), (22, 3705570), (30, 2717418), (33, 2470380), (36, 2264515), (38, 2145330), (44, 1852785), (45, 1811612), (55, 1482228), (57, 1430220), (60, 1358709), (66, 1235190), (76, 1072665), (90, 905806), (95, 858132), (99, 823460), (110, 741114), (114, 715110), (121, 673740), (132, 617595), (165, 494076), (171, 476740), (180, 452903), (190, 429066), (197, 413820), (198, 411730), (209, 390060), (220, 370557), (228, 357555), (242, 336870), (285, 286044), (330, 247038), (342, 238370), (363, 224580), (380, 214533), (394, 206910), (396, 205865), (418, 195030), (484, 168435), (495, 164692), (570, 143022), (591, 137940), (605, 134748), (627, 130020), (660, 123519), (684, 119185), (726, 112290), (788, 103455), (836, 97515), (855, 95348), (985, 82764), (990, 82346), (1045, 78012), (1089, 74860), (1140, 71511), (1182, 68970), (1210, 67374), (1254, 65010), (1452, 56145), (1710, 47674), (1773, 45980), (1815, 44916), (1881, 43340), (1970, 41382), (1980, 41173), (2090, 39006), (2167, 37620), (2178, 37430), (2299, 35460), (2364, 34485), (2420, 33687), (2508, 32505), (2955, 27588), (3135, 26004), (3420, 23837), (3546, 22990), (3630, 22458), (3743, 21780), (3762, 21670), (3940, 20691), (4180, 19503), (4334, 18810), (4356, 18715), (4598, 17730), (5445, 14972), (5910, 13794), (6270, 13002), (6501, 12540), (6897, 11820), (7092, 11495), (7260, 11229), (7486, 10890), (7524, 10835), (8668, 9405), (8865, 9196)]