21150325

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6361}}^1$

素因数の和:6397

約数の個数: 24

約数和(自身を含む): 31555520

約数和(自身を除く): 10405195

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 6361, 31805, 44527, 120859, 159025, 222635, 604295, 846013, 1113175, 3021475, 4230065, 21150325]

約数ペア:

[(1, 21150325), (5, 4230065), (7, 3021475), (19, 1113175), (25, 846013), (35, 604295), (95, 222635), (133, 159025), (175, 120859), (475, 44527), (665, 31805), (3325, 6361)]