81555040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72817}}^1$

素因数の和:72839

約数の個数: 48

約数和(自身を含む): 220201632

約数和(自身を除く): 138646592

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72817, 145634, 291268, 364085, 509719, 582536, 728170, 1019438, 1165072, 1456340, 2038876, 2330144, 2548595, 2912680, 4077752, 5097190, 5825360, 8155504, 10194380, 11650720, 16311008, 20388760, 40777520, 81555040]

約数ペア:

[(1, 81555040), (2, 40777520), (4, 20388760), (5, 16311008), (7, 11650720), (8, 10194380), (10, 8155504), (14, 5825360), (16, 5097190), (20, 4077752), (28, 2912680), (32, 2548595), (35, 2330144), (40, 2038876), (56, 1456340), (70, 1165072), (80, 1019438), (112, 728170), (140, 582536), (160, 509719), (224, 364085), (280, 291268), (560, 145634), (1120, 72817)]