81162900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1031

約数の個数: 216

約数和(自身を含む): 313424384

約数和(自身を除く): 232261484

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 25, 26, 28, 30, 35, 36, 39, 42, 45, 50, 52, 60, 63, 65, 70, 75, 78, 84, 90, 91, 100, 105, 117, 126, 130, 140, 150, 156, 175, 180, 182, 195, 210, 225, 234, 252, 260, 273, 300, 315, 325, 350, 364, 390, 420, 450, 455, 468, 525, 546, 585, 630, 650, 700, 780, 819, 900, 910, 975, 991, 1050, 1092, 1170, 1260, 1300, 1365, 1575, 1638, 1820, 1950, 1982, 2100, 2275, 2340, 2730, 2925, 2973, 3150, 3276, 3900, 3964, 4095, 4550, 4955, 5460, 5850, 5946, 6300, 6825, 6937, 8190, 8919, 9100, 9910, 11700, 11892, 12883, 13650, 13874, 14865, 16380, 17838, 19820, 20475, 20811, 24775, 25766, 27300, 27748, 29730, 34685, 35676, 38649, 40950, 41622, 44595, 49550, 51532, 59460, 62433, 64415, 69370, 74325, 77298, 81900, 83244, 89190, 90181, 99100, 104055, 115947, 124866, 128830, 138740, 148650, 154596, 173425, 178380, 180362, 193245, 208110, 222975, 231894, 249732, 257660, 270543, 297300, 312165, 322075, 346850, 360724, 386490, 416220, 445950, 450905, 463788, 520275, 541086, 579735, 624330, 644150, 693700, 772980, 811629, 891900, 901810, 966225, 1040550, 1082172, 1159470, 1248660, 1288300, 1352715, 1560825, 1623258, 1803620, 1932450, 2081100, 2254525, 2318940, 2705430, 2898675, 3121650, 3246516, 3864900, 4058145, 4509050, 5410860, 5797350, 6243300, 6763575, 8116290, 9018100, 11594700, 13527150, 16232580, 20290725, 27054300, 40581450, 81162900]

約数ペア:

[(1, 81162900), (2, 40581450), (3, 27054300), (4, 20290725), (5, 16232580), (6, 13527150), (7, 11594700), (9, 9018100), (10, 8116290), (12, 6763575), (13, 6243300), (14, 5797350), (15, 5410860), (18, 4509050), (20, 4058145), (21, 3864900), (25, 3246516), (26, 3121650), (28, 2898675), (30, 2705430), (35, 2318940), (36, 2254525), (39, 2081100), (42, 1932450), (45, 1803620), (50, 1623258), (52, 1560825), (60, 1352715), (63, 1288300), (65, 1248660), (70, 1159470), (75, 1082172), (78, 1040550), (84, 966225), (90, 901810), (91, 891900), (100, 811629), (105, 772980), (117, 693700), (126, 644150), (130, 624330), (140, 579735), (150, 541086), (156, 520275), (175, 463788), (180, 450905), (182, 445950), (195, 416220), (210, 386490), (225, 360724), (234, 346850), (252, 322075), (260, 312165), (273, 297300), (300, 270543), (315, 257660), (325, 249732), (350, 231894), (364, 222975), (390, 208110), (420, 193245), (450, 180362), (455, 178380), (468, 173425), (525, 154596), (546, 148650), (585, 138740), (630, 128830), (650, 124866), (700, 115947), (780, 104055), (819, 99100), (900, 90181), (910, 89190), (975, 83244), (991, 81900), (1050, 77298), (1092, 74325), (1170, 69370), (1260, 64415), (1300, 62433), (1365, 59460), (1575, 51532), (1638, 49550), (1820, 44595), (1950, 41622), (1982, 40950), (2100, 38649), (2275, 35676), (2340, 34685), (2730, 29730), (2925, 27748), (2973, 27300), (3150, 25766), (3276, 24775), (3900, 20811), (3964, 20475), (4095, 19820), (4550, 17838), (4955, 16380), (5460, 14865), (5850, 13874), (5946, 13650), (6300, 12883), (6825, 11892), (6937, 11700), (8190, 9910), (8919, 9100)]