19993316

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 21375004

約数列:

[1, 2, 4, 7, 14, 28, 71, 89, 113, 142, 178, 226, 284, 356, 452, 497, 623, 791, 994, 1246, 1582, 1988, 2492, 3164, 6319, 8023, 10057, 12638, 16046, 20114, 25276, 32092, 40228, 44233, 56161, 70399, 88466, 112322, 140798, 176932, 224644, 281596, 714047, 1428094, 2856188, 4998329, 9996658, 19993316]

約数ペア:

[(1, 19993316), (2, 9996658), (4, 4998329), (7, 2856188), (14, 1428094), (28, 714047), (71, 281596), (89, 224644), (113, 176932), (142, 140798), (178, 112322), (226, 88466), (284, 70399), (356, 56161), (452, 44233), (497, 40228), (623, 32092), (791, 25276), (994, 20114), (1246, 16046), (1582, 12638), (1988, 10057), (2492, 8023), (3164, 6319)]