20905472

素因数分解:

$2^9\times 7^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:351

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 29507968

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 256, 266, 304, 307, 448, 512, 532, 608, 614, 896, 1064, 1216, 1228, 1792, 2128, 2149, 2432, 2456, 3584, 4256, 4298, 4864, 4912, 5833, 8512, 8596, 9728, 9824, 11666, 17024, 17192, 19648, 23332, 34048, 34384, 39296, 40831, 46664, 68096, 68768, 78592, 81662, 93328, 137536, 157184, 163324, 186656, 275072, 326648, 373312, 550144, 653296, 746624, 1100288, 1306592, 1493248, 2613184, 2986496, 5226368, 10452736, 20905472]

約数ペア:

[(1, 20905472), (2, 10452736), (4, 5226368), (7, 2986496), (8, 2613184), (14, 1493248), (16, 1306592), (19, 1100288), (28, 746624), (32, 653296), (38, 550144), (56, 373312), (64, 326648), (76, 275072), (112, 186656), (128, 163324), (133, 157184), (152, 137536), (224, 93328), (256, 81662), (266, 78592), (304, 68768), (307, 68096), (448, 46664), (512, 40831), (532, 39296), (608, 34384), (614, 34048), (896, 23332), (1064, 19648), (1216, 17192), (1228, 17024), (1792, 11666), (2128, 9824), (2149, 9728), (2432, 8596), (2456, 8512), (3584, 5833), (4256, 4912), (4298, 4864)]