19803520

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 53978400

約数和(自身を除く): 34174880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 64, 80, 88, 97, 110, 116, 128, 145, 160, 176, 194, 220, 232, 290, 319, 320, 352, 388, 440, 464, 485, 580, 638, 640, 704, 776, 880, 928, 970, 1067, 1160, 1276, 1408, 1552, 1595, 1760, 1856, 1940, 2134, 2320, 2552, 2813, 3104, 3190, 3520, 3712, 3880, 4268, 4640, 5104, 5335, 5626, 6208, 6380, 7040, 7760, 8536, 9280, 10208, 10670, 11252, 12416, 12760, 14065, 15520, 17072, 18560, 20416, 21340, 22504, 25520, 28130, 30943, 31040, 34144, 40832, 42680, 45008, 51040, 56260, 61886, 62080, 68288, 85360, 90016, 102080, 112520, 123772, 136576, 154715, 170720, 180032, 204160, 225040, 247544, 309430, 341440, 360064, 450080, 495088, 618860, 682880, 900160, 990176, 1237720, 1800320, 1980352, 2475440, 3960704, 4950880, 9901760, 19803520]

約数ペア:

[(1, 19803520), (2, 9901760), (4, 4950880), (5, 3960704), (8, 2475440), (10, 1980352), (11, 1800320), (16, 1237720), (20, 990176), (22, 900160), (29, 682880), (32, 618860), (40, 495088), (44, 450080), (55, 360064), (58, 341440), (64, 309430), (80, 247544), (88, 225040), (97, 204160), (110, 180032), (116, 170720), (128, 154715), (145, 136576), (160, 123772), (176, 112520), (194, 102080), (220, 90016), (232, 85360), (290, 68288), (319, 62080), (320, 61886), (352, 56260), (388, 51040), (440, 45008), (464, 42680), (485, 40832), (580, 34144), (638, 31040), (640, 30943), (704, 28130), (776, 25520), (880, 22504), (928, 21340), (970, 20416), (1067, 18560), (1160, 17072), (1276, 15520), (1408, 14065), (1552, 12760), (1595, 12416), (1760, 11252), (1856, 10670), (1940, 10208), (2134, 9280), (2320, 8536), (2552, 7760), (2813, 7040), (3104, 6380), (3190, 6208), (3520, 5626), (3712, 5335), (3880, 5104), (4268, 4640)]