18840640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:684

約数の個数: 112

約数和(自身を含む): 55302912

約数和(自身を除く): 36462272

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 647, 728, 832, 910, 1040, 1120, 1294, 1456, 1820, 2080, 2240, 2588, 2912, 3235, 3640, 4160, 4529, 5176, 5824, 6470, 7280, 8411, 9058, 10352, 12940, 14560, 16822, 18116, 20704, 22645, 25880, 29120, 33644, 36232, 41408, 42055, 45290, 51760, 58877, 67288, 72464, 84110, 90580, 103520, 117754, 134576, 144928, 168220, 181160, 207040, 235508, 269152, 289856, 294385, 336440, 362320, 471016, 538304, 588770, 672880, 724640, 942032, 1177540, 1345760, 1449280, 1884064, 2355080, 2691520, 3768128, 4710160, 9420320, 18840640]

約数ペア:

[(1, 18840640), (2, 9420320), (4, 4710160), (5, 3768128), (7, 2691520), (8, 2355080), (10, 1884064), (13, 1449280), (14, 1345760), (16, 1177540), (20, 942032), (26, 724640), (28, 672880), (32, 588770), (35, 538304), (40, 471016), (52, 362320), (56, 336440), (64, 294385), (65, 289856), (70, 269152), (80, 235508), (91, 207040), (104, 181160), (112, 168220), (130, 144928), (140, 134576), (160, 117754), (182, 103520), (208, 90580), (224, 84110), (260, 72464), (280, 67288), (320, 58877), (364, 51760), (416, 45290), (448, 42055), (455, 41408), (520, 36232), (560, 33644), (647, 29120), (728, 25880), (832, 22645), (910, 20704), (1040, 18116), (1120, 16822), (1294, 14560), (1456, 12940), (1820, 10352), (2080, 9058), (2240, 8411), (2588, 7280), (2912, 6470), (3235, 5824), (3640, 5176), (4160, 4529)]