256377440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:221

約数の個数: 192

約数和(自身を含む): 706019328

約数和(自身を除く): 449641888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 37, 40, 44, 55, 62, 74, 80, 88, 110, 124, 127, 148, 155, 160, 176, 185, 220, 248, 254, 296, 310, 341, 352, 370, 407, 440, 496, 508, 592, 620, 635, 682, 740, 814, 880, 992, 1016, 1147, 1184, 1240, 1270, 1364, 1397, 1480, 1628, 1705, 1760, 2032, 2035, 2294, 2480, 2540, 2728, 2794, 2960, 3256, 3410, 3937, 4064, 4070, 4588, 4699, 4960, 5080, 5456, 5588, 5735, 5920, 6512, 6820, 6985, 7874, 8140, 9176, 9398, 10160, 10912, 11176, 11470, 12617, 13024, 13640, 13970, 15748, 16280, 18352, 18796, 19685, 20320, 22352, 22940, 23495, 25234, 27280, 27940, 31496, 32560, 36704, 37592, 39370, 43307, 44704, 45880, 46990, 50468, 51689, 54560, 55880, 62992, 63085, 65120, 75184, 78740, 86614, 91760, 93980, 100936, 103378, 111760, 125984, 126170, 145669, 150368, 157480, 173228, 183520, 187960, 201872, 206756, 216535, 223520, 252340, 258445, 291338, 314960, 346456, 375920, 403744, 413512, 433070, 504680, 516890, 582676, 629920, 692912, 728345, 751840, 827024, 866140, 1009360, 1033780, 1165352, 1385824, 1456690, 1602359, 1654048, 1732280, 2018720, 2067560, 2330704, 2913380, 3204718, 3464560, 4135120, 4661408, 5826760, 6409436, 6929120, 8011795, 8270240, 11653520, 12818872, 16023590, 23307040, 25637744, 32047180, 51275488, 64094360, 128188720, 256377440]

約数ペア:

[(1, 256377440), (2, 128188720), (4, 64094360), (5, 51275488), (8, 32047180), (10, 25637744), (11, 23307040), (16, 16023590), (20, 12818872), (22, 11653520), (31, 8270240), (32, 8011795), (37, 6929120), (40, 6409436), (44, 5826760), (55, 4661408), (62, 4135120), (74, 3464560), (80, 3204718), (88, 2913380), (110, 2330704), (124, 2067560), (127, 2018720), (148, 1732280), (155, 1654048), (160, 1602359), (176, 1456690), (185, 1385824), (220, 1165352), (248, 1033780), (254, 1009360), (296, 866140), (310, 827024), (341, 751840), (352, 728345), (370, 692912), (407, 629920), (440, 582676), (496, 516890), (508, 504680), (592, 433070), (620, 413512), (635, 403744), (682, 375920), (740, 346456), (814, 314960), (880, 291338), (992, 258445), (1016, 252340), (1147, 223520), (1184, 216535), (1240, 206756), (1270, 201872), (1364, 187960), (1397, 183520), (1480, 173228), (1628, 157480), (1705, 150368), (1760, 145669), (2032, 126170), (2035, 125984), (2294, 111760), (2480, 103378), (2540, 100936), (2728, 93980), (2794, 91760), (2960, 86614), (3256, 78740), (3410, 75184), (3937, 65120), (4064, 63085), (4070, 62992), (4588, 55880), (4699, 54560), (4960, 51689), (5080, 50468), (5456, 46990), (5588, 45880), (5735, 44704), (5920, 43307), (6512, 39370), (6820, 37592), (6985, 36704), (7874, 32560), (8140, 31496), (9176, 27940), (9398, 27280), (10160, 25234), (10912, 23495), (11176, 22940), (11470, 22352), (12617, 20320), (13024, 19685), (13640, 18796), (13970, 18352), (15748, 16280)]