20795728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1021}}^1$

素因数の和:1115

約数の個数: 40

約数和(自身を含む): 43087520

約数和(自身を除く): 22291792

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 1021, 1072, 1273, 2042, 2546, 4084, 5092, 8168, 10184, 16336, 19399, 20368, 38798, 68407, 77596, 136814, 155192, 273628, 310384, 547256, 1094512, 1299733, 2599466, 5198932, 10397864, 20795728]

約数ペア:

[(1, 20795728), (2, 10397864), (4, 5198932), (8, 2599466), (16, 1299733), (19, 1094512), (38, 547256), (67, 310384), (76, 273628), (134, 155192), (152, 136814), (268, 77596), (304, 68407), (536, 38798), (1021, 20368), (1072, 19399), (1273, 16336), (2042, 10184), (2546, 8168), (4084, 5092)]