640545840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{26959}}^1$

素因数の和:26992

約数の個数: 160

約数和(自身を含む): 2406988800

約数和(自身を除く): 1766442960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 99, 108, 110, 120, 132, 135, 144, 165, 176, 180, 198, 216, 220, 240, 264, 270, 297, 330, 360, 396, 432, 440, 495, 528, 540, 594, 660, 720, 792, 880, 990, 1080, 1188, 1320, 1485, 1584, 1980, 2160, 2376, 2640, 2970, 3960, 4752, 5940, 7920, 11880, 23760, 26959, 53918, 80877, 107836, 134795, 161754, 215672, 242631, 269590, 296549, 323508, 404385, 431344, 485262, 539180, 593098, 647016, 727893, 808770, 889647, 970524, 1078360, 1186196, 1213155, 1294032, 1455786, 1482745, 1617540, 1779294, 1941048, 2156720, 2372392, 2426310, 2668941, 2911572, 2965490, 3235080, 3558588, 3639465, 3882096, 4448235, 4744784, 4852620, 5337882, 5823144, 5930980, 6470160, 7117176, 7278930, 8006823, 8896470, 9705240, 10675764, 11646288, 11861960, 13344705, 14234352, 14557860, 16013646, 17792940, 19410480, 21351528, 23723920, 26689410, 29115720, 32027292, 35585880, 40034115, 42703056, 53378820, 58231440, 64054584, 71171760, 80068230, 106757640, 128109168, 160136460, 213515280, 320272920, 640545840]

約数ペア:

[(1, 640545840), (2, 320272920), (3, 213515280), (4, 160136460), (5, 128109168), (6, 106757640), (8, 80068230), (9, 71171760), (10, 64054584), (11, 58231440), (12, 53378820), (15, 42703056), (16, 40034115), (18, 35585880), (20, 32027292), (22, 29115720), (24, 26689410), (27, 23723920), (30, 21351528), (33, 19410480), (36, 17792940), (40, 16013646), (44, 14557860), (45, 14234352), (48, 13344705), (54, 11861960), (55, 11646288), (60, 10675764), (66, 9705240), (72, 8896470), (80, 8006823), (88, 7278930), (90, 7117176), (99, 6470160), (108, 5930980), (110, 5823144), (120, 5337882), (132, 4852620), (135, 4744784), (144, 4448235), (165, 3882096), (176, 3639465), (180, 3558588), (198, 3235080), (216, 2965490), (220, 2911572), (240, 2668941), (264, 2426310), (270, 2372392), (297, 2156720), (330, 1941048), (360, 1779294), (396, 1617540), (432, 1482745), (440, 1455786), (495, 1294032), (528, 1213155), (540, 1186196), (594, 1078360), (660, 970524), (720, 889647), (792, 808770), (880, 727893), (990, 647016), (1080, 593098), (1188, 539180), (1320, 485262), (1485, 431344), (1584, 404385), (1980, 323508), (2160, 296549), (2376, 269590), (2640, 242631), (2970, 215672), (3960, 161754), (4752, 134795), (5940, 107836), (7920, 80877), (11880, 53918), (23760, 26959)]