21332440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28069}}^1$

素因数の和:28099

約数の個数: 32

約数和(自身を含む): 50526000

約数和(自身を除く): 29193560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28069, 56138, 112276, 140345, 224552, 280690, 533311, 561380, 1066622, 1122760, 2133244, 2666555, 4266488, 5333110, 10666220, 21332440]

約数ペア:

[(1, 21332440), (2, 10666220), (4, 5333110), (5, 4266488), (8, 2666555), (10, 2133244), (19, 1122760), (20, 1066622), (38, 561380), (40, 533311), (76, 280690), (95, 224552), (152, 140345), (190, 112276), (380, 56138), (760, 28069)]