19937175

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 36783360

約数和(自身を除く): 16846185

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 75, 85, 95, 255, 285, 323, 425, 475, 823, 969, 1275, 1425, 1615, 2469, 4115, 4845, 8075, 12345, 13991, 15637, 20575, 24225, 41973, 46911, 61725, 69955, 78185, 209865, 234555, 265829, 349775, 390925, 797487, 1049325, 1172775, 1329145, 3987435, 6645725, 19937175]

約数ペア:

[(1, 19937175), (3, 6645725), (5, 3987435), (15, 1329145), (17, 1172775), (19, 1049325), (25, 797487), (51, 390925), (57, 349775), (75, 265829), (85, 234555), (95, 209865), (255, 78185), (285, 69955), (323, 61725), (425, 46911), (475, 41973), (823, 24225), (969, 20575), (1275, 15637), (1425, 13991), (1615, 12345), (2469, 8075), (4115, 4845)]