81293960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1$

素因数の和:351

約数の個数: 128

約数和(自身を含む): 216172800

約数和(自身を除く): 134878840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 29, 40, 44, 46, 55, 58, 88, 92, 110, 115, 116, 145, 184, 220, 230, 232, 253, 277, 290, 319, 440, 460, 506, 554, 580, 638, 667, 920, 1012, 1108, 1160, 1265, 1276, 1334, 1385, 1595, 2024, 2216, 2530, 2552, 2668, 2770, 3047, 3190, 3335, 5060, 5336, 5540, 6094, 6371, 6380, 6670, 7337, 8033, 10120, 11080, 12188, 12742, 12760, 13340, 14674, 15235, 16066, 24376, 25484, 26680, 29348, 30470, 31855, 32132, 36685, 40165, 50968, 58696, 60940, 63710, 64264, 70081, 73370, 80330, 88363, 121880, 127420, 140162, 146740, 160660, 176726, 184759, 254840, 280324, 293480, 321320, 350405, 353452, 369518, 441815, 560648, 700810, 706904, 739036, 883630, 923795, 1401620, 1478072, 1767260, 1847590, 2032349, 2803240, 3534520, 3695180, 4064698, 7390360, 8129396, 10161745, 16258792, 20323490, 40646980, 81293960]

約数ペア:

[(1, 81293960), (2, 40646980), (4, 20323490), (5, 16258792), (8, 10161745), (10, 8129396), (11, 7390360), (20, 4064698), (22, 3695180), (23, 3534520), (29, 2803240), (40, 2032349), (44, 1847590), (46, 1767260), (55, 1478072), (58, 1401620), (88, 923795), (92, 883630), (110, 739036), (115, 706904), (116, 700810), (145, 560648), (184, 441815), (220, 369518), (230, 353452), (232, 350405), (253, 321320), (277, 293480), (290, 280324), (319, 254840), (440, 184759), (460, 176726), (506, 160660), (554, 146740), (580, 140162), (638, 127420), (667, 121880), (920, 88363), (1012, 80330), (1108, 73370), (1160, 70081), (1265, 64264), (1276, 63710), (1334, 60940), (1385, 58696), (1595, 50968), (2024, 40165), (2216, 36685), (2530, 32132), (2552, 31855), (2668, 30470), (2770, 29348), (3047, 26680), (3190, 25484), (3335, 24376), (5060, 16066), (5336, 15235), (5540, 14674), (6094, 13340), (6371, 12760), (6380, 12742), (6670, 12188), (7337, 11080), (8033, 10120)]