19985150

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 39692400

約数和(自身を除く): 19707250

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 109, 190, 193, 218, 386, 475, 545, 950, 965, 1090, 1930, 2071, 2725, 3667, 4142, 4825, 5450, 7334, 9650, 10355, 18335, 20710, 21037, 36670, 42074, 51775, 91675, 103550, 105185, 183350, 210370, 399703, 525925, 799406, 1051850, 1998515, 3997030, 9992575, 19985150]

約数ペア:

[(1, 19985150), (2, 9992575), (5, 3997030), (10, 1998515), (19, 1051850), (25, 799406), (38, 525925), (50, 399703), (95, 210370), (109, 183350), (190, 105185), (193, 103550), (218, 91675), (386, 51775), (475, 42074), (545, 36670), (950, 21037), (965, 20710), (1090, 18335), (1930, 10355), (2071, 9650), (2725, 7334), (3667, 5450), (4142, 4825)]