19970360

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5147}}^1$

素因数の和:5255

約数の個数: 32

約数和(自身を含む): 45405360

約数和(自身を除く): 25435000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5147, 10294, 20588, 25735, 41176, 51470, 102940, 205880, 499259, 998518, 1997036, 2496295, 3994072, 4992590, 9985180, 19970360]

約数ペア:

[(1, 19970360), (2, 9985180), (4, 4992590), (5, 3994072), (8, 2496295), (10, 1997036), (20, 998518), (40, 499259), (97, 205880), (194, 102940), (388, 51470), (485, 41176), (776, 25735), (970, 20588), (1940, 10294), (3880, 5147)]