1991901960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1\times {\mathrm{307}}^1$

素因数の和:660

約数の個数: 192

約数和(自身を含む): 6616209600

約数和(自身を除く): 4624307640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 67, 72, 90, 120, 134, 180, 201, 268, 269, 307, 335, 360, 402, 536, 538, 603, 614, 670, 804, 807, 921, 1005, 1076, 1206, 1228, 1340, 1345, 1535, 1608, 1614, 1842, 2010, 2152, 2412, 2421, 2456, 2680, 2690, 2763, 3015, 3070, 3228, 3684, 4020, 4035, 4605, 4824, 4842, 5380, 5526, 6030, 6140, 6456, 7368, 8040, 8070, 9210, 9684, 10760, 11052, 12060, 12105, 12280, 13815, 16140, 18023, 18420, 19368, 20569, 22104, 24120, 24210, 27630, 32280, 36046, 36840, 41138, 48420, 54069, 55260, 61707, 72092, 82276, 82583, 90115, 96840, 102845, 108138, 110520, 123414, 144184, 162207, 164552, 165166, 180230, 185121, 205690, 216276, 246828, 247749, 270345, 308535, 324414, 330332, 360460, 370242, 411380, 412915, 432552, 493656, 495498, 540690, 617070, 648828, 660664, 720920, 740484, 743247, 811035, 822760, 825830, 925605, 990996, 1081380, 1234140, 1238745, 1297656, 1480968, 1486494, 1622070, 1651660, 1851210, 1981992, 2162760, 2468280, 2477490, 2972988, 3244140, 3303320, 3702420, 3716235, 4954980, 5533061, 5945976, 6488280, 7404840, 7432470, 9909960, 11066122, 14864940, 16599183, 22132244, 27665305, 29729880, 33198366, 44264488, 49797549, 55330610, 66396732, 82995915, 99595098, 110661220, 132793464, 165991830, 199190196, 221322440, 248987745, 331983660, 398380392, 497975490, 663967320, 995950980, 1991901960]

約数ペア:

[(1, 1991901960), (2, 995950980), (3, 663967320), (4, 497975490), (5, 398380392), (6, 331983660), (8, 248987745), (9, 221322440), (10, 199190196), (12, 165991830), (15, 132793464), (18, 110661220), (20, 99595098), (24, 82995915), (30, 66396732), (36, 55330610), (40, 49797549), (45, 44264488), (60, 33198366), (67, 29729880), (72, 27665305), (90, 22132244), (120, 16599183), (134, 14864940), (180, 11066122), (201, 9909960), (268, 7432470), (269, 7404840), (307, 6488280), (335, 5945976), (360, 5533061), (402, 4954980), (536, 3716235), (538, 3702420), (603, 3303320), (614, 3244140), (670, 2972988), (804, 2477490), (807, 2468280), (921, 2162760), (1005, 1981992), (1076, 1851210), (1206, 1651660), (1228, 1622070), (1340, 1486494), (1345, 1480968), (1535, 1297656), (1608, 1238745), (1614, 1234140), (1842, 1081380), (2010, 990996), (2152, 925605), (2412, 825830), (2421, 822760), (2456, 811035), (2680, 743247), (2690, 740484), (2763, 720920), (3015, 660664), (3070, 648828), (3228, 617070), (3684, 540690), (4020, 495498), (4035, 493656), (4605, 432552), (4824, 412915), (4842, 411380), (5380, 370242), (5526, 360460), (6030, 330332), (6140, 324414), (6456, 308535), (7368, 270345), (8040, 247749), (8070, 246828), (9210, 216276), (9684, 205690), (10760, 185121), (11052, 180230), (12060, 165166), (12105, 164552), (12280, 162207), (13815, 144184), (16140, 123414), (18023, 110520), (18420, 108138), (19368, 102845), (20569, 96840), (22104, 90115), (24120, 82583), (24210, 82276), (27630, 72092), (32280, 61707), (36046, 55260), (36840, 54069), (41138, 48420)]