81665920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{18229}}^1$

素因数の和:18255

約数の個数: 64

約数和(自身を含む): 223135200

約数和(自身を除く): 141469280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 18229, 36458, 72916, 91145, 127603, 145832, 182290, 255206, 291664, 364580, 510412, 583328, 638015, 729160, 1020824, 1166656, 1276030, 1458320, 2041648, 2333312, 2552060, 2916640, 4083296, 5104120, 5833280, 8166592, 10208240, 11666560, 16333184, 20416480, 40832960, 81665920]

約数ペア:

[(1, 81665920), (2, 40832960), (4, 20416480), (5, 16333184), (7, 11666560), (8, 10208240), (10, 8166592), (14, 5833280), (16, 5104120), (20, 4083296), (28, 2916640), (32, 2552060), (35, 2333312), (40, 2041648), (56, 1458320), (64, 1276030), (70, 1166656), (80, 1020824), (112, 729160), (128, 638015), (140, 583328), (160, 510412), (224, 364580), (280, 291664), (320, 255206), (448, 182290), (560, 145832), (640, 127603), (896, 91145), (1120, 72916), (2240, 36458), (4480, 18229)]