20545175

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 11119465

約数列:

[1, 5, 7, 19, 25, 35, 37, 95, 133, 167, 175, 185, 259, 475, 665, 703, 835, 925, 1169, 1295, 3173, 3325, 3515, 4175, 4921, 5845, 6179, 6475, 15865, 17575, 22211, 24605, 29225, 30895, 43253, 79325, 111055, 117401, 123025, 154475, 216265, 555275, 587005, 821807, 1081325, 2935025, 4109035, 20545175]

約数ペア:

[(1, 20545175), (5, 4109035), (7, 2935025), (19, 1081325), (25, 821807), (35, 587005), (37, 555275), (95, 216265), (133, 154475), (167, 123025), (175, 117401), (185, 111055), (259, 79325), (475, 43253), (665, 30895), (703, 29225), (835, 24605), (925, 22211), (1169, 17575), (1295, 15865), (3173, 6475), (3325, 6179), (3515, 5845), (4175, 4921)]