18474175

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 25511760

約数和(自身を除く): 7037585

約数列:

[1, 5, 19, 23, 25, 89, 95, 115, 361, 437, 445, 475, 575, 1691, 1805, 2047, 2185, 2225, 8303, 8455, 9025, 10235, 10925, 32129, 38893, 41515, 42275, 51175, 160645, 194465, 207575, 738967, 803225, 972325, 3694835, 18474175]

約数ペア:

[(1, 18474175), (5, 3694835), (19, 972325), (23, 803225), (25, 738967), (89, 207575), (95, 194465), (115, 160645), (361, 51175), (437, 42275), (445, 41515), (475, 38893), (575, 32129), (1691, 10925), (1805, 10235), (2047, 9025), (2185, 8455), (2225, 8303)]