177777680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{116959}}^1$

素因数の和:116991

約数の個数: 40

約数和(自身を含む): 435091200

約数和(自身を除く): 257313520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 116959, 233918, 467836, 584795, 935672, 1169590, 1871344, 2222221, 2339180, 4444442, 4678360, 8888884, 9356720, 11111105, 17777768, 22222210, 35555536, 44444420, 88888840, 177777680]

約数ペア:

[(1, 177777680), (2, 88888840), (4, 44444420), (5, 35555536), (8, 22222210), (10, 17777768), (16, 11111105), (19, 9356720), (20, 8888884), (38, 4678360), (40, 4444442), (76, 2339180), (80, 2222221), (95, 1871344), (152, 1169590), (190, 935672), (304, 584795), (380, 467836), (760, 233918), (1520, 116959)]