21761800

素因数分解:

$2^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{2053}}^1$

素因数の和:2122

約数の個数: 48

約数和(自身を含む): 51575940

約数和(自身を除く): 29814140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 200, 212, 265, 424, 530, 1060, 1325, 2053, 2120, 2650, 4106, 5300, 8212, 10265, 10600, 16424, 20530, 41060, 51325, 82120, 102650, 108809, 205300, 217618, 410600, 435236, 544045, 870472, 1088090, 2176180, 2720225, 4352360, 5440450, 10880900, 21761800]

約数ペア:

[(1, 21761800), (2, 10880900), (4, 5440450), (5, 4352360), (8, 2720225), (10, 2176180), (20, 1088090), (25, 870472), (40, 544045), (50, 435236), (53, 410600), (100, 217618), (106, 205300), (200, 108809), (212, 102650), (265, 82120), (424, 51325), (530, 41060), (1060, 20530), (1325, 16424), (2053, 10600), (2120, 10265), (2650, 8212), (4106, 5300)]