81417160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 212336640

約数和(自身を除く): 130919480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 47, 55, 62, 88, 94, 110, 124, 127, 155, 188, 220, 235, 248, 254, 310, 341, 376, 440, 470, 508, 517, 620, 635, 682, 940, 1016, 1034, 1240, 1270, 1364, 1397, 1457, 1705, 1880, 2068, 2540, 2585, 2728, 2794, 2914, 3410, 3937, 4136, 5080, 5170, 5588, 5828, 5969, 6820, 6985, 7285, 7874, 10340, 11176, 11656, 11938, 13640, 13970, 14570, 15748, 16027, 19685, 20680, 23876, 27940, 29140, 29845, 31496, 32054, 39370, 43307, 47752, 55880, 58280, 59690, 64108, 65659, 78740, 80135, 86614, 119380, 128216, 131318, 157480, 160270, 173228, 185039, 216535, 238760, 262636, 320540, 328295, 346456, 370078, 433070, 525272, 641080, 656590, 740156, 866140, 925195, 1313180, 1480312, 1732280, 1850390, 2035429, 2626360, 3700780, 4070858, 7401560, 8141716, 10177145, 16283432, 20354290, 40708580, 81417160]

約数ペア:

[(1, 81417160), (2, 40708580), (4, 20354290), (5, 16283432), (8, 10177145), (10, 8141716), (11, 7401560), (20, 4070858), (22, 3700780), (31, 2626360), (40, 2035429), (44, 1850390), (47, 1732280), (55, 1480312), (62, 1313180), (88, 925195), (94, 866140), (110, 740156), (124, 656590), (127, 641080), (155, 525272), (188, 433070), (220, 370078), (235, 346456), (248, 328295), (254, 320540), (310, 262636), (341, 238760), (376, 216535), (440, 185039), (470, 173228), (508, 160270), (517, 157480), (620, 131318), (635, 128216), (682, 119380), (940, 86614), (1016, 80135), (1034, 78740), (1240, 65659), (1270, 64108), (1364, 59690), (1397, 58280), (1457, 55880), (1705, 47752), (1880, 43307), (2068, 39370), (2540, 32054), (2585, 31496), (2728, 29845), (2794, 29140), (2914, 27940), (3410, 23876), (3937, 20680), (4136, 19685), (5080, 16027), (5170, 15748), (5588, 14570), (5828, 13970), (5969, 13640), (6820, 11938), (6985, 11656), (7285, 11176), (7874, 10340)]