18891320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:157

約数の個数: 128

約数和(自身を含む): 52876800

約数和(自身を除く): 33985480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 53, 56, 67, 70, 76, 95, 106, 133, 134, 140, 152, 190, 212, 265, 266, 268, 280, 335, 371, 380, 424, 469, 530, 532, 536, 665, 670, 742, 760, 938, 1007, 1060, 1064, 1273, 1330, 1340, 1484, 1855, 1876, 2014, 2120, 2345, 2546, 2660, 2680, 2968, 3551, 3710, 3752, 4028, 4690, 5035, 5092, 5320, 6365, 7049, 7102, 7420, 8056, 8911, 9380, 10070, 10184, 12730, 14098, 14204, 14840, 17755, 17822, 18760, 20140, 24857, 25460, 28196, 28408, 35245, 35510, 35644, 40280, 44555, 49714, 50920, 56392, 67469, 70490, 71020, 71288, 89110, 99428, 124285, 134938, 140980, 142040, 178220, 198856, 248570, 269876, 281960, 337345, 356440, 472283, 497140, 539752, 674690, 944566, 994280, 1349380, 1889132, 2361415, 2698760, 3778264, 4722830, 9445660, 18891320]

約数ペア:

[(1, 18891320), (2, 9445660), (4, 4722830), (5, 3778264), (7, 2698760), (8, 2361415), (10, 1889132), (14, 1349380), (19, 994280), (20, 944566), (28, 674690), (35, 539752), (38, 497140), (40, 472283), (53, 356440), (56, 337345), (67, 281960), (70, 269876), (76, 248570), (95, 198856), (106, 178220), (133, 142040), (134, 140980), (140, 134938), (152, 124285), (190, 99428), (212, 89110), (265, 71288), (266, 71020), (268, 70490), (280, 67469), (335, 56392), (371, 50920), (380, 49714), (424, 44555), (469, 40280), (530, 35644), (532, 35510), (536, 35245), (665, 28408), (670, 28196), (742, 25460), (760, 24857), (938, 20140), (1007, 18760), (1060, 17822), (1064, 17755), (1273, 14840), (1330, 14204), (1340, 14098), (1484, 12730), (1855, 10184), (1876, 10070), (2014, 9380), (2120, 8911), (2345, 8056), (2546, 7420), (2660, 7102), (2680, 7049), (2968, 6365), (3551, 5320), (3710, 5092), (3752, 5035), (4028, 4690)]