21704560

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5119}}^1$

素因数の和:5185

約数の個数: 40

約数和(自身を含む): 51425280

約数和(自身を除く): 29720720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5119, 10238, 20476, 25595, 40952, 51190, 81904, 102380, 204760, 271307, 409520, 542614, 1085228, 1356535, 2170456, 2713070, 4340912, 5426140, 10852280, 21704560]

約数ペア:

[(1, 21704560), (2, 10852280), (4, 5426140), (5, 4340912), (8, 2713070), (10, 2170456), (16, 1356535), (20, 1085228), (40, 542614), (53, 409520), (80, 271307), (106, 204760), (212, 102380), (265, 81904), (424, 51190), (530, 40952), (848, 25595), (1060, 20476), (2120, 10238), (4240, 5119)]