28402720

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{9343}}^1$

素因数の和:9377

約数の個数: 48

約数和(自身を含む): 70640640

約数和(自身を除く): 42237920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 9343, 18686, 37372, 46715, 74744, 93430, 149488, 177517, 186860, 298976, 355034, 373720, 710068, 747440, 887585, 1420136, 1494880, 1775170, 2840272, 3550340, 5680544, 7100680, 14201360, 28402720]

約数ペア:

[(1, 28402720), (2, 14201360), (4, 7100680), (5, 5680544), (8, 3550340), (10, 2840272), (16, 1775170), (19, 1494880), (20, 1420136), (32, 887585), (38, 747440), (40, 710068), (76, 373720), (80, 355034), (95, 298976), (152, 186860), (160, 177517), (190, 149488), (304, 93430), (380, 74744), (608, 46715), (760, 37372), (1520, 18686), (3040, 9343)]